Efficient (Cu 1-: X Ag x ) 2 ZnSn(S,Se) 4 solar cells on flexible Mo foils - Details

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Abstract：

Cation　substitution　plays　a　crucial　role　in　improving　the　efficiency　of　Cu　2　ZnSn(S,Se)　4　(CZTSSe)　solar　cells.　In　this　work,　we　report　a　significant　efficiency　enhancement　of　flexible　CZTSSe　solar　cells　on　Mo　foils　by　partial　substitution　of　Cu　+　with　Ag　+　.　It　is　found　that　the　band　gap　(E　g　)　of　(Cu　1-x　Ag　x　)　2　ZnSn(S,Se)　4　(CAZTSSe)　thin　films　can　be　adjusted　by　doping　with　Ag　with　x　from　0　to　6%,　and　the　minimum　E　g　is　achieved　with　x　=　5%.　We　also　found　that　Ag　doping　can　obviously　increase　the　average　grain　size　of　the　CAZTSSe　absorber　from　0.4　to　1.1　μm.　Additionally,　the　depletion　width　(W　d　)　at　the　heterojunction　interface　of　CAZTSSe/CdS　is　found　to　be　improved.　As　a　result,　the　open-circuit　voltage　deficit　(V　oc,def　)　is　gradually　decreased,　and　the　band　tailing　is　suppressed.　Benefiting　from　the　enhanced　open-circuit　voltage　(V　oc　),　the　power　conversion　efficiency　(PCE)　is　successfully　enhanced　from　4.34%　(x　=　0)　to　6.24%　(x　=　4%),　and　the　V　oc,def　decreases　from　915　to　848　mV.　©　2018　The　Royal　Society　of　Chemistry.

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[ 1 ] [Yu, X.]College of Physics and Information Engineering, Institute of Micro-Nano Devices and Solar Cells, Fuzhou University, Fuzhou, 350108, China
[ 2 ] [Cheng, S.]College of Physics and Information Engineering, Institute of Micro-Nano Devices and Solar Cells, Fuzhou University, Fuzhou, 350108, China
[ 3 ] [Cheng, S.]Jiangsu Collaborative Innovation Center of Photovolatic Science and Engineering, Changzhou, 213164, China
[ 4 ] [Yan, Q.]College of Physics and Information Engineering, Institute of Micro-Nano Devices and Solar Cells, Fuzhou University, Fuzhou, 350108, China
[ 5 ] [Yu, J.]College of Physics and Information Engineering, Institute of Micro-Nano Devices and Solar Cells, Fuzhou University, Fuzhou, 350108, China
[ 6 ] [Yu, J.]Jiangsu Collaborative Innovation Center of Photovolatic Science and Engineering, Changzhou, 213164, China
[ 7 ] [Qiu, W.]College of Physics and Information Engineering, Institute of Micro-Nano Devices and Solar Cells, Fuzhou University, Fuzhou, 350108, China
[ 8 ] [Zhou, Z.]Key Laboratory for Special Functional Materials of MOE, Collaborative Innovation Center of Nano Functional Materials and Applications, Henan University, Kaifeng Henan, 475004, China
[ 9 ] [Zheng, Q.]College of Physics and Information Engineering, Institute of Micro-Nano Devices and Solar Cells, Fuzhou University, Fuzhou, 350108, China
[ 10 ] [Zheng, Q.]Jiangsu Collaborative Innovation Center of Photovolatic Science and Engineering, Changzhou, 213164, China
[ 11 ] [Wu, S.]Key Laboratory for Special Functional Materials of MOE, Collaborative Innovation Center of Nano Functional Materials and Applications, Henan University, Kaifeng Henan, 475004, China

Reprint 's Address：

[Cheng, S.]College of Physics and Information Engineering, Institute of Micro-Nano Devices and Solar Cells, Fuzhou UniversityChina

Email：

sycheng@fzu.edu.cn

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Source ：

RSC Advances

ISSN： 2046-2069

Year： 2018

Issue： 49

Volume： 8

Page： 27686-27694

3 . 0 4 9

JCR@2018

3 . 9 0 0

JCR@2023

ESI HC Threshold：209

JCR Journal Grade：2

CAS Journal Grade：3

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ESI Highly Cited Papers on the List： 0 Unfold All

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30 Days PV： 0

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