Efficient Perovskite Solar Cells with a Gradient Light Absorption Layer and Low VOC Loss Obtained by Interface Engineering

2021 ◽  
Vol 4 (4) ◽  
pp. 3584-3592
Author(s):  
Zhipeng Xuan ◽  
Xia Hao ◽  
Xianlin Qu ◽  
Yunfan Wang ◽  
Huagui Lai ◽  
...  
Keyword(s):  
Solar Cells ◽  
Light Absorption ◽  
Perovskite Solar Cells ◽  
Interface Engineering ◽  
Absorption Layer

scholarly journals Gradient engineered light absorption layer for enhanced carrier separation efficiency in perovskite solar cells

2020 ◽  
Author(s):  
Gaozhu Wu ◽  
Qing Zhu ◽  
Teng Zhang ◽  
Ziqi Zou ◽  
Weiping Wang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Band Structure ◽  
Light Absorption ◽  
Separation Efficiency ◽  
Perovskite Solar Cells ◽  
Thermal Evaporation Method ◽  
Absorption Layer ◽  
Perovskite Materials ◽  
High Efficient ◽  
Carrier Separation

Abstract Carrier transport behavior in perovskite light absorption layer significantly impacts the performance of perovskite solar cells (PSCs). In this work, reduced carrier recombination losses were achieved by the design of band structure in perovskite materials. An ultrathin (PbI 2 /PbBr 2 ) n film with a gradient thickness ratio was deposited as the lead halide precursor layer by thermal evaporation method, and PSCs with a gradient band structure in perovskite absorption layer were fabricated by a two-step method in ambient atmosphere. For comparison, PSCs with homogeneous perovskite materials of MAPbI 3 and MAPbI x Br 3-x were fabricated as well. It is found that the gradient type-II band structure greatly reduces the carrier lifetime and enhances the carrier separation efficiency. As a result, the PSCs with a gradient band structure exhibit an average power conversion efficiency of 17.5%, which is 1-2% higher than that of traditional PSCs. This work provides a novel method for developing high-efficient PSCs.

scholarly journals Gradient engineered light absorption layer for enhanced carrier separation efficiency in perovskite solar cells

2020 ◽  
Author(s):  
Gaozhu Wu ◽  
Qing Zhu ◽  
Teng Zhang ◽  
Ziqi Zou ◽  
Weiping Wang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Band Structure ◽  
Light Absorption ◽  
Separation Efficiency ◽  
Perovskite Solar Cells ◽  
Thermal Evaporation Method ◽  
Absorption Layer ◽  
Perovskite Materials ◽  
High Efficient ◽  
Carrier Separation

Abstract Carrier transport behavior in perovskite light absorption layer significantly impacts the performance of perovskite solar cells (PSCs). In this work, reduced carrier recombination losses were achieved by the design of band structure in perovskite materials. An ultrathin (PbI2/PbBr2)n film with a gradient thickness ratio was deposited as the lead halide precursor layer by thermal evaporation method, and PSCs with a gradient band structure in perovskite absorption layer were fabricated by a two-step method in ambient atmosphere. For comparison, PSCs with homogeneous perovskite materials of MAPbI3 and MAPbIxBr3-x were fabricated as well. It is found that the gradient type-II band structure greatly reduces the carrier lifetime and enhances the carrier separation efficiency. As a result, the PSCs with a gradient band structure exhibit an average power conversion efficiency of 17.5%, which is 1-2% higher than that of traditional PSCs. This work provides a novel method for developing high-efficient PSCs.

scholarly journals Composition and Interface Engineering for Efficient and Thermally Stable Pb-Sn Mixed Low-Bandgap Perovskite Solar Cells

2018 ◽  
Vol 28 (51) ◽  
pp. 1804603 ◽  
Author(s):  
Dan Chi ◽  
Shihua Huang ◽  
Meiying Zhang ◽  
Shaiqiang Mu ◽  
Yang Zhao ◽  
...  
Keyword(s):  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Thermally Stable ◽  
Interface Engineering ◽  
Low Bandgap

Interface Engineering of Perovskite Solar Cells with Air Plasma Treatment for Improved Performance

ChemPhysChem ◽  
2017 ◽  
Vol 18 (20) ◽  
pp. 2939-2946 ◽  
Author(s):  
Xiao Ma ◽  
Peng Tang ◽  
Dong Liu ◽  
Jingquan Zhang ◽  
Lianghuan Feng ◽  
...  
Keyword(s):  
Solar Cells ◽  
Plasma Treatment ◽  
Perovskite Solar Cells ◽  
Air Plasma ◽  
Interface Engineering ◽  
Improved Performance ◽  
Air Plasma Treatment

Interface engineering of highly efficient perovskite solar cells

Science ◽  
2014 ◽  
Vol 345 (6196) ◽  
pp. 542-546 ◽  
Author(s):  
H. Zhou ◽  
Q. Chen ◽  
G. Li ◽  
S. Luo ◽  
T.-b. Song ◽  
...  
Keyword(s):  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Interface Engineering ◽  
Highly Efficient
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