Session Index

Photovoltaic Technology

Photovoltaic Technology I
Thursday, Dec. 3, 2020  13:15-14:45
Presider: Prof. Peichen Yu
Room: 6AB Room 725
13:15 - 13:45 Manuscript ID.  0800
Paper No.  2020-THU-S0901-I001
Invited Speaker:
Chorng-Jye Huang

Tunnel Oxide Passivated Contact Structure for High Efficiency Solar Cell and Module Applications
Chun-Chieh Lo;Han-Chen Chang;Bo-Cheng Kung;Sung-Yu Chen;Chorng-Jye Huang

An advanced structure composite of poly-Si/ tunnel SiO2 as passivation contact has been developed and realized for solar cell applications. The passivation result with implied open circuit voltage (iVOC) of 726 mV and carrier lifetime of 5004 μs were examined. By applying this passivation structure to c-Si photovoltaics, Tunnel Oxide Passivated Contact (TOPCon) solar cells were developed and revealed a promising result with efficiency >23%. The module made by these TOPCon solar cells with high performance of 20.7% efficiency and 352W power was obtained.

13:45 - 14:00 Manuscript ID.  0238
Paper No.  2020-THU-S0901-O001
Anindya Sundar Jana
Award Candidate
ITO free Semi-Transparent metal thin film electrode with low sheet resistance grown on thin Bathocuproine layer for Optoelectronic devices
Anindya Sundar Jana;Sajal Biring

Here, we have fabricated an efficient organic photovoltaic device with novel small- molecular donor/ acceptor on an ITO-free electrode. The ITO-free device shows its potential to replace the conventional ITO-based electrode

14:00 - 14:15 Manuscript ID.  0457
Paper No.  2020-THU-S0901-O002
Jui-Hsuan Tsai
Award Candidate
Dielectric Barrier Discharge Jet Processed TiO2 Nanoparticle Layer for Perovskite Solar Cells
Jui-Hsuan Tsai;Mohana Sruthi;Cheng-Che Hsu;Jian-Zhang Chen;I-Chun Cheng

The nanoparticle-based TiO2 electron transport layer of n-i-p perovskite solar cells is treated with the non-vacuum dielectric barrier discharge jet using He as the carrier gas. The photoelectrical conversion efficiency is enhanced from 13.92% to 14.43% for the on-glass cell and from 12.30% to 13.66% for the on-PEN cell.

14:15 - 14:30 Manuscript ID.  0786
Paper No.  2020-THU-S0901-O003
Yen-Ju Lin
Award Candidate
Efficiency Enhancement of Si-based Ultra-thin Solar Cell by Cascading with Dilute-Nitride Ga(N)AsP
Yen-Ju Lin;David Jui-Yang Feng;Tzy-Rong Lin;Mao-Kuen Kuo

This study has numerically evaluated the performance of Si-based ultra-thin solar cell can be enhanced by cascading a dilute-nitride Ga(N)AsP. The result shows, in case of thickness = 11.5 micron, the efficiency can be improved from 12.7% to 18.9%. In case of efficiency = 13.1%, we can significantly reduce thickness from 15 micron to 5.5 micron.

14:30 - 14:45 Manuscript ID.  0367
Paper No.  2020-THU-S0901-O004
Gautham Kumar
Award Candidate
Plasmonic Effect of Bimetallic Au-Cu Alloy Nanoparticles on Indoor Performance of Organic Photovoltaics
Gautham Kumar;Fang Chung Chen

Bimetallic Au-Cu alloy nanoparticles (NPs) are incorporated in the anodic buffer layer to enhance the performance of organic photovoltaic devices (OPVs). Localized surface plasmon resonance (LSPR) induced by the NPs effectively increase the power conversion efficiency (PCE) both under 1 sun illumination condition and indoor light sources (LED and TL5).


Photovoltaic Technology

Photovoltaic Technology II
Thursday, Dec. 3, 2020  16:20-17:50
Presider: Prof. Fang-Chung Chen
Prof. Li-Yin Chen
Room: 6AB Room 725
16:20 - 16:50 Manuscript ID.  0811
Paper No.  2020-THU-S0902-I001
Invited Speaker:
Cheng-Ying Chen

Earth-abundant Metal Chalcogenide Materials for Photovoltaics: Cu2ZnSn(S,Se)4 and Cu2BaSn(S,Se)4
Cheng-Ying Chen

The development of renewable energy is a trend in the world. And developing thin-film solar cells, which utilize photovoltaic effect to convert light energy into electrical energy, will play a key role in the global trend. Chalcogenide based thin-film photovoltaics such as CdTe and Cu(In,Ga)Se2 (CIGSe) have achieved remarkable over 20% power conversion efficiency (PCE). These thin-film materials have wide spectral response ranges and high absorption coefficients, so they are sensitive to weak light. However, the toxicity of cadmium (Cd), and the scarcity of indium (In) and tellurium (Te) may restrict the production capacity for a growing worldwide power consumption (~terawatt). Therefore, the development of low-cost, earth-abundant thin-film solar cells have attracted a lot of attention. the new generation metal chalcogenides: Cu2ZnSn(Se,S)4 (CZTSSe) and Cu2BaSn(S,Se)4 (CBTS) will be two of the most potential alternative photovoltaic energy materials due to its abundant, non-toxic elements and providing desirable optoelectronic properties, similar to CIGSSe. In this talk, I will share some of our recent progresses on CZTSSe and CBTS:

(1) Interface engineering of CdS/CZTS(Se) is an important aspect of improving the performance of buffer/absorber heterojunction combination. It has been demonstrated that the crossover phenomenon due to the interface recombination can be drastically eliminated by interface modification. Here, we present a comprehensive study on the effects of soft-baking (SB) temperature on the junction properties and the corresponding optoelectronic and interface-structural properties;

(2) we used vacuum process to synthesis the CBTSSe absorber and performed Raman, X-ray diffraction (XRD), photoluminescence (PL) measurements as the tools to understand the quality and the information of phase identification. Based on the results, the two-step prepared CBTSSe absorbers with tunable bandgap has been successfully demonstrated.

16:50 - 17:05 Manuscript ID.  0186
Paper No.  2020-THU-S0902-O001
Chen Guan Syun
Performance Improvement of Perovskite Solar Cells Using IBA Doping into PEDOT:PSS Hole Transportation Layer
Chen Guan Syun;Lee Hsin Ying;Lee Ching Ting

In this work, perovskite solar cells using isobutyl alcohol (IBA)-doped PEDOT:PSS hole transportation layer (HTL) were fabricated. Using IBA doping could improve the conductivity of PEDOT:PSS HTL and match the highest occupied molecular orbital (HOMO) energy level between PEDOT:PSS and perovskite, which could improve the performance of perovskite solar cells.

17:05 - 17:20 Manuscript ID.  0336
Paper No.  2020-THU-S0902-O002
Yao-Chieh Wu
Enhanced Photovoltaic Properties of Dye-Sensitized Solar Cells by Au Nanoparticles Hybrid TiO2 Photoanode
Hsueh-Tao Chou;Yao-Chieh Wu;Chun-Yu Chu;Tien-Ming Wu;Shih-Hung Lin

In this study, the gold nanoparticles (AuNPs) solutions with different absorbance peaks are mixed with TiO2 powder to prepare photoanode using doctor blade method. The optimal photoelectric conversion efficiency (PCE) of dye-sensitized solar cell (DSSCs) for Au-TiO2 photoanode with absorbance peak of 0.2 a.u. is 4.69 %.

17:20 - 17:35 Manuscript ID.  0261
Paper No.  2020-THU-S0902-O003
Ruei-Lien Sun
Infrared Schottky Photodetector based on Silicon with Thermal Effect under 1550 nm Laser Illumination
Ruei-Lien Sun;Chia-Chun Wang;Ching-Fuh Lin

Schottky photodetector based on Nickel (Ni/n-Si) is characterized for low cost and simple process. We found that it could generate current by internal-light excitation mechanism and rapid photocurrent when the hot carriers cross the Schottky barrier at the same time. Our research investigated the relationship between the two effect completely.

17:35 - 17:50 Manuscript ID.  0046
Paper No.  2020-THU-S0902-O004
Abdul Khalik Akbar
The Optimization of ZnO Synthesis Method for Preparing the Efficient Polymer Solar Cells
Abdul Khalik Akbar;Yun Ming Sung;Yu Ching Huang;Johan Iskandar;Richie Estrada;Shun Wei Liu

The different ZnO synthesis will influence the device performance of polymer solar cells (PSCs). Regarding the previous work, ZnO is a critical thing to determine the behavior of carrier-transporting in the active layer. Thus, this paper provides a suitable method of ZnO synthesis to enhance the performance in PSCs.


Photovoltaic Technology

Photovoltaic Technology III
Friday, Dec. 4, 2020  13:10-15:40
Presider: Prof. Cheng-Ying Chen
Room: 6AB Room 725
13:10 - 13:25 Manuscript ID.  0290
Paper No.  2020-FRI-S0903-O001
Jiang Yeu-Long
Effects of n-type hydrogenated amorphous and microcrystalline silicon on p-i-n solar cells
Jiang Yeu-Long;Yan Yi-Su

N-type hydrogenated amorphous (n-a-Si:H) and microcrystalline silicon (n-μc-Si:H) were fabricated by plasma-enhanced chemical vapor deposition (PECVD). The influence of n-a-Si:H and n-μc-Si:H films on the performance of single n-layer and double n-layers p-i-n solar cells were investigated.

13:25 - 13:40 Manuscript ID.  0298
Paper No.  2020-FRI-S0903-O002
Yeu-Long Jiang
Multilayers i-layer p-i-n thin-film solar cells
Yeu-Long Jiang;Hsiao-Ku Shih

Hydrogenated amorphous silicon thin films with different silicon-hydrogen bonds of a-Si:Hx/a-Si:Hy multilayer structures and TCO/p/i(a-Si:Hx/a-Si:Hy)/n/Al p-i-n were fabricated by periodical modulation of RF power of plasma enhanced chemical vapor deposition (PECVD). Optimization of this thickness ratio can improve the I-V characteristics of the a-Si:Hx/a-Si:Hy multilayer p-i-n solar cells.

13:40 - 13:55 Manuscript ID.  0689
Paper No.  2020-FRI-S0903-O003
Yu-Lun Cheng
Crystalline Silicon PERC Solar Cell with Inverted-Pyramid-Like Surfaces and Ozonized AlOx Passivation Layer on the Rear Side
Pang-Kai Liu;Yu-Lun Cheng;Likarn Wang

A thin aluminum film on the inverted-pyramid-like surface of a silicon wafer was transformed into an aluminum oxide layer by the method of ozonation. Lifetimes of the wafers with such passivation layers proved to be increased, and the resultant PERC cells showed performance improvement compared with conventional counterparts.


Photovoltaic Technology

Poster Session I
Friday, Dec. 4, 2020  15:40-17:30
Presider: Prof. Zingway Pei
Prof. Hsin-Ying Lee
Room: 6AB Courtyard
Manuscript ID.  0531
Paper No.  2020-FRI-P0901-P001
Hui-Hung Shen
Award Candidate
Fabrication Of Perovskite Absorber For Thin Film Solar Cell Via Sandwich Evaporation Technique
Hui-Hung Shen;Jia-Ci Jhou;Ching-Fuh Lin

Perovskite layer is formed using by two-step sandwich evaporation technique (SET). First, we spin coating MAI and combine PbI2 by thermal evaporation. Second, we evaporate MAI at low-pressure to make better morphology of perovskite crystallize. Through the double-interdiffusion using SET, one can enhance the perovskite solar cells to high PCE=14.6%.

Manuscript ID.  0170
Paper No.  2020-FRI-P0901-P002
Chen-Fu Lin
Award Candidate
Bifacial perovskite solar cells and their application for perovskite/silicon tandem device
Wei-Chiao Hung;Chen-Fu Lin;Peter Chen

A bifacial perovskite solar cells with an active area of 1.02 cm2 deliver a remarkable efficiency of 14.66% after optimizing the transmittance and sheet resistance of IZO, and the finger Au spacing. Eventually, a promising PCE of 20.92% for four-terminal perovskite/silicon tandem cell with 1.02 cm2 active area is demonstrated.

Manuscript ID.  0780
Paper No.  2020-FRI-P0901-P003
Hsi-Wen Hsu
Award Candidate
Photovoltaic Performance Enhancement of Silicon Solar Cells Based on Combination of Plasmonic Effects and Spectral Up-conversion
Hsi-Wen Hsu;Wei-Chih Chiu;Yu-Tsen Tsai;Jheng-Jie Liu;Wen-Jeng Ho

The plasmonic effects of the silver nanoparticles embedded in TiO2 antireflective layer on the front-side surface and up-conversion of YF3:Yb3+/Er3+-doped phosphors layer on the back-side surface of silicon solar cells to enhance cell’s efficiency, of 23.68% and 1.39%, respectively, are experimentally demonstrated in this study.

Manuscript ID.  0452
Paper No.  2020-FRI-P0901-P004
Jen-Yao Chang
Award Candidate
Nickel Silicide Schottky Barrier Diode Infrared Photodetector
Jen-Yao Chang;Zih-Chun Su;Hsin-Han Lai;Ching-Fuh Lin

The silicon-based photodetector is limited by the 1.1 eV energy gap and the cut-off wavelength is about 1.2 μm. In this work, Schottky barrier formed by nickel silicide can effectively extend the cut-off wavelength. Furthermore, the annealing process improves the infrared light signal-noise-ratio (SNR) of the photodetector.

Manuscript ID.  0392
Paper No.  2020-FRI-P0901-P005
Guan-Yu Lin
Crystallinity investigation of perovskite solar cells based on different solvents of PbI2 under low humidity
Guan-Yu Lin;Hsueh-Tao Chou;Tien-Ming Wu;Shih-Hung Lin;Zi-Heng Lin

In this study, perovskite solar cells based on three different solvents of PbI2 (DMF, DMSO, and DMF/DMSO with a volume ratio of 7:3) are fabricated by using two-step method. With the improvements of surface morphology and crystallinity of perovskite layer, a decent photoelectric conversion efficiency of 6.02 % is achieved.

Manuscript ID.  0231
Paper No.  2020-FRI-P0901-P006
Peter Chao-Yu Chen
Large-size Cation for Slowing Down Ion Migration with Improved Stability of CsPbIBr2
Peter Chao-Yu Chen

CsPbIBr2 is considered as an ideal candidate with proper bandgap. Nevertheless, the working stability hinders its further application. The instability due to ion migration is inhibited by introducing large size cation as shown by PL This approach also leads to improved stability against moisture and light.

Manuscript ID.  0684
Paper No.  2020-FRI-P0901-P007
Chien-Yi Li
Semitransparent Organic Solar Cell Utilizing Thin Alloy Electrode
Chien-Yi Li;Yi-Nan Lin;Chih-Chien Lee;Shun-Wei Liu

This work utilizes a thin Cu-Ag alloy as the electrode of a semitransparent organic solar cell. The PCE of the semitransparent device is 1.26% with EQE more than 20% in the infrared spectrum. The semitransparent shows favorable AVT exceeding 77%, which is beneficial for see-through applications.

Manuscript ID.  0624
Paper No.  2020-FRI-P0901-P008
Li Bo-Kuan
The effect of the structure of the electron transport layer on the turn on voltage for perovskite NIR LED
Li Bo-Kuan;Lee Chih-Chien

We have investigated on the influence of the electron transport layer on the injection voltage of perovskite light-emitting diodes . Now we change the film thickness of the capping layer PC61BM to see how it changes the injection voltage.

Manuscript ID.  0444
Paper No.  2020-FRI-P0901-P009
Jui-Hsin Tan
Reduced graphene oxide photodetectors on flexible substrates
Jui-Hsin Tan;Wu-Yih Uen;Wei-Chen Tu

We propose a simple approach to construct flexible rGO photodetectors on paper substrates. The photodetector shows an on off ratio of 1.25 and a responsivity of 18.73 mA/W under 532 nm laser illumination. Our results provide a strategy for fabricating rGO-based photodetectors which show a potential for wearable systems applications.

Manuscript ID.  0361
Paper No.  2020-FRI-P0901-P010
Wei-Cheng Lin
Fabrication of MAPbI3 Perovskite Solar Cells with Evaporated PbI2 Films Via Two-Step Annealing Method
Wei-Cheng Lin;Yu-Shen Tung;Ching-Ho Tien;Lung-Chien Chen

We reported a simple evaporation process to deposited a lead iodide (PbI2) film followed with a methylammonium iodide (MAI) solution dip coating to prepare a MAPbI3 perovskite. Consequently, the as-fabricated MAPbI3 perovskite solar cell yielded a power conversion efficiency (PCE) of 8.7%.

Manuscript ID.  0628
Paper No.  2020-FRI-P0901-P011
Mou Jia-Cing
The influence of mixture solvent of perovskite precursor solution on the performances of inverted perovskite solar cells
Mou Jia-Cing;Lee Chih-Chien;Cheng Hsin-Ming

We have investigated on the improvement of efficiency of perovskite solar cells (PSCs) with different perovskite precursor solution. Finally, the optimized device with the DMF:DMSO with a v/v of 4:1 exhibits high power conversion efficiency(PCE) and high external quantum efficiency (EQE).

Manuscript ID.  0371
Paper No.  2020-FRI-P0901-P012
Yung-Fang Yang
Surface Passivation on Single-Crystal Perovskite Micro-Plates Improves the Performance of Solar Cells
Tzu-Hsueh Wu;Yung-Fang Yang;Fang-Chung Chen

Perovskite single crystals ideally exhibit better optoelectronic properties than polycrystalline thin films because they possess lower defect densities. Herein, we find that dripping TOPO on the surfaces of perovksite single crystals improve their photovoltaic performance. The power conversion efficiency is averagely improved from 11.9% to 14.76% after the surface passivation.


Photovoltaic Technology

Poster Session II
Saturday, Dec. 5, 2020  10:30-12:30
Presider: Prof. Wen-Jeng Ho
Room: 6AB Courtyard
Manuscript ID.  0373
Paper No.  2020-SAT-P0902-P001
Chia-Ming Yang
Modulation of LED light for IGZO semiconductor in LAPS
Chun-Hui Chen;Yan-Qi Liang;Tzu-Min Huang;Chia-Ming Yang

In the study, with wavelength of 365, 405 and 435 nm LED light illumination is the evaluated by photocurrent-voltage (PC-V) measurements at different aperture size, LED light power and duty of cycle square waves of ac signal in In-Ga-Zn oxide (IGZO) Light-addressable potentiometric sensor (LAPS).

Manuscript ID.  0058
Paper No.  2020-SAT-P0902-P002
Zu-Po Yang
Hydrogenation Behaviors in Passivated Emitter and Rear Silicon Solar Cells with Variously Hydrogenated SiNx Films
Zu-Po Yang;Tsung-Cheng Chen;Ing-Song Yu

Carrier induced hydrogenation (CIH) is one solution for light induced degradation. The mechanism of CIH process is the passivation of B-O related defects by hydrogen atoms. Here, we investigated the effect on the enhanced conversion efficiency by the amount of hydrogen effused from the rear SiNx:H layers.

Manuscript ID.  0128
Paper No.  2020-SAT-P0902-P003
Qi Yu Huang
White Light Photodetector based on Copper Oxide Nanoclusters/Zinc Oxide Nanorods Heterojunction Device
Qi Yu Huang;Shih-Hsuan Chen;Chia-Yu Chang;Chun-Ying Huang;Vincent K. S. Hsiao

In this conference, we present a heterojunction photodetector based on a hybrid copper oxide nanoclusters (Cu2O/CuO NCs)/zinc oxide nanorods (ZnO NRs) structure. Copper oxide NCs and ZnO NRs are respectively deposited on an indium tin oxide (ITO)-coated glass by hydrothermal method and pulsed-laser deposition (PLD).

Manuscript ID.  0368
Paper No.  2020-SAT-P0902-P004
Hung Wen Huang
Vertical Oriented Quasi-Two-Dimensional Perovskite Single Crystal Micro-Plates for Highly Efficient Solar Cells
Hao Yeu Tsai;Hung Wen Huang;Fang Chung Chen

We developed method to grow quasi-two-dimensional perovskite single crystals.The single crystal is directly grown on hole transport layer,VB-FNPD,and we control thickness of single crystal to 10μm.Adjusting ratio of ions in the precursor solution,we can obtain thin-film crystals with vertically oriented 2D stacked structure.The highest conversion efficiency achieve up to 15.50%.

Manuscript ID.  0263
Paper No.  2020-SAT-P0902-P005
Itaru Raifuku
Formamide Based Additive for Improving the Performance of FAPbI3 Based Perovskite Solar Cells
Itaru Raifuku;Cheng-Hung Hou;Yu-Hsien Chiang;Ming-Hsien Li;Chen-Fu Lin;Pei-Ying Lin;Peter Chen

Formamide iodide (FoAI) was synthesized and applied as an additive for FAPbI3 based perovskite solar cells (PSCs). FoAI additive improved the performance of PSCs by inhibiting formation of δ-FAPbI3 which deteriorates the performance of PSCs. We believe FoAI is a promising additive to boost the performance of PSCs.

Manuscript ID.  0276
Paper No.  2020-SAT-P0902-P006
Pei-Ying Lin
Enhance the stability of perovskite solar cells by compositional engineering
Pei-Ying Lin;Yueh-Ya Chiu;Peter Chen

The purpose of this study is to enhance the perovskite stability by 2D/3D stacked perovskite layer. We incorporated SCN- anion into FA0.9Cs0.1PbI3, further deposited large-size on SCN-based perovskite to improve the stability of the perovskite solar cells.

Manuscript ID.  0277
Paper No.  2020-SAT-P0902-P007
Shun-Yu Xie
Surface treatments lead to efficiency improvement in perovskite solar cells for indoor applications
YI-FONG LAI;Shun-Yu Xie;Fang-Chung Chen

We spin-coat a layer of methylammonium chloride (MACl) on the perovskite active layer in order to improve efficiency for indoor applications. These surface treatments can not only increase the bandgaps and the open-circuit voltages but also improve PCEs from26.4% to 30.5% at 1000 lux under indoor lighting conditions.

Manuscript ID.  0294
Paper No.  2020-SAT-P0902-P008
Yu-Zhi Fu
Photoelectrochemical Behaviors of Copper Oxide /Zinc Oxide Nanorods Heterojunction
Yu-Zhi Fu;Tsung-Chih Wan;Vincent K. S. Hsiao

In this conference, we present a photocathode based on a hybrid copper oxide (Cu2O)/zinc oxide nanorods (ZnO NRs) heterojunction structure. Copper oxide and ZnO NRs are respectively deposited on an indium tin oxide (ITO)-coated glass by chemical bath deposition and hydrothermal method.

Manuscript ID.  0365
Paper No.  2020-SAT-P0902-P009
Fang-I Lai
Effect of Growth Time on ZnO Nanorod and Dye Sensitized Solar Cell Performance
Fang-I Lai;Jui-Fu Yang;Shou-Yi Kuo

In this study, the chemical solution method was used to prepare one-dimensional ZnO nanorod photoelectrodes, which were subsequently used in dye-sensitized solar cells (DSSCs). The effects of ZnO nanorods (NRs) on the dye adsorption performance of DSSCs were investigated by growing ZnO NRs with varying lengths as photoelectrodes.

Manuscript ID.  0638
Paper No.  2020-SAT-P0902-P010
Hui-Hung Shen
The Comparison of solution process and SET to fabricate chlorine contained perovskite solar cell
Chun-Hsiao Kuan;Hui-Hung Shen;Li-Jen Huang;Ching-Fuh Lin

Solution process and sandwich evaporate technique (SET) are used to fabricate MAPbI3 perovskite solar cells doped with chloride ion, respectively. MAPbIxCl3-x solar cells fabricated by SET and solution process both perform well. We have successfully produced chlorine containing perovskite solar cell with a high crystallinity and high efficiency of 15.1%.

Manuscript ID.  0400
Paper No.  2020-SAT-P0902-P011
Jong-Hong Lu
Advanced Applications of Perovskite/Organic Photovoltaics: Beyond Human Eye’s Color Perception, and Double-Sided Irradiation Energy Harvesting
Jong-Hong Lu;Ming-Tsang Cheng;Tsung-Han Tsai;Chih-Ping Chen

Integrating an efficient perovskite photodiode with high-purity color filters, we achieved PVSK color PDs with LDRs over mesopic vision and demonstrated highly color recognition beyond human eye. We also designed a surface phase-matched transmission enhancement top electrode−Ag/indium tin oxide (ITO) structure for highly efficient and aesthetic semitransparent organic photovoltaics.

Manuscript ID.  0500
Paper No.  2020-SAT-P0902-P012
Po-Yuan Chen
Reduce the interaction of PSS in PEDOT:PSS with thermal evaporation PbI2 to enhance Perovskite solar cell power conversion efficiency
Po-Yuan Chen;Wei-Chih Lai;Huai-Cheng Yu

Use DMSO to process the PEDOT:PSS interface to improve conductivity, and add a MAI buffer layer to avoid the metal Pb generated by the contact between PSS and PbI2. Through the improvement of the interface, the efficiency conversion efficiency is increased from 3.8% to 12.7%.