Realizing High Efficiency over 20% of Low‐Bandgap Pb–Sn‐Alloyed Perovskite Solar Cells by In Situ Reduction of Sn 4+

Solar RRL ◽  
2019 ◽  
Vol 4 (3) ◽  
pp. 1900467 ◽  
Author(s):  
Tingming Jiang ◽  
Zeng Chen ◽  
Xu Chen ◽  
Tianyu Liu ◽  
Xinya Chen ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Efficiency ◽  
Perovskite Solar Cells ◽  
In Situ Reduction ◽  
Low Bandgap

scholarly journals In-situ formed and low-temperature deposited Nb: TiO2 compact-mesoporous layer for hysteresis-less perovskite solar cells with high performance

2020 ◽  
Author(s):  
Miao Yu ◽  
Haoxuan Sun ◽  
Xiaona Huang ◽  
Yichao Yan ◽  
Wanli Zhang
Keyword(s):  
Solar Cells ◽  
Low Temperature ◽  
High Performance ◽  
High Efficiency ◽  
Perovskite Solar Cells ◽  
Transport Layer ◽  
Electron Transport Layer ◽  
High Power Conversion Efficiency ◽  
Mesoporous Structures

Abstract Recently, reported perovskite solar cells (PSCs) with high power conversion efficiency (PCE) are mostly based on mesoporous structures containing mesoporous titanium oxide (TiO 2 ) which is the main factor to reduce the overall hysteresis. However, existing fabrication approaches for mesoporous TiO 2 generally require a high temperature (>450 °C) annealing process. Moreover, there is still plenty of scope for improvement in terms of increasing the electron conductivity and reducing the carrier recombination. Herein, a facile one-step, in situ and low-temperature method was developed to prepare an Nb:TiO 2 compact-mesoporous layer to serve as both a scaffold and an electron transport layer (ETL) in PSCs. The Nb:TiO 2 compact-mesoporous layer based PSCs exhibit suppressed hysteresis, which is attributed to the synergistic effect of the large interface surface area caused by nano-pin morphology on the surface and the improved carrier transportation caused by the presence of Nb. Such a high-quality compact-mesoporous layer allows the PSC achieve a remarkable PCE of 19.74%. This work promises an effective approach for creating hysteresis-less and high-efficiency PSCs based on compact-mesoporous structures with lower energy consumption and cost.

scholarly journals Triple-cation low-bandgap perovskite thin-films for high-efficiency four-terminal all-perovskite tandem solar cells

2020 ◽  
Vol 8 (46) ◽  
pp. 24608-24619 ◽  
Author(s):  
Somayeh Moghadamzadeh ◽  
Ihteaz M. Hossain ◽  
The Duong ◽  
Saba Gharibzadeh ◽  
Tobias Abzieher ◽  
...  
Keyword(s):  
Thin Films ◽  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
High Efficiency ◽  
Power Conversion ◽  
Perovskite Solar Cells ◽  
Tandem Solar Cells ◽  
Low Bandgap ◽  
Photo Stability

Incorporating 2.5% Cs in FA0.8MA0.2Sn0.5Pb0.5I3 improves the photo-stability of the low-bandgap perovskite solar cells. The champion device with power conversion efficiency of 18.9% maintain 92% of its initial efficiency after 120 min MPP tracking.

High-efficiency near-infrared enabled planar perovskite solar cells by embedding upconversion nanocrystals

Nanoscale ◽  
2017 ◽  
Vol 9 (46) ◽  
pp. 18535-18545 ◽  
Author(s):  
Fan-Li Meng ◽  
Jiao-Jiao Wu ◽  
Er-Fei Zhao ◽  
Yan-Zhen Zheng ◽  
Mei-Lan Huang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Near Infrared ◽  
High Efficiency ◽  
Perovskite Solar Cells ◽  
Upconversion Nanocrystals

In situ embedding of upconversion nanocrystals in perovskite flm is developed and lead to a high PCE with enabled NIR response for planar solar cell.

scholarly journals Printing High‐Efficiency Perovskite Solar Cells in High‐Humidity Ambient Environment—An In Situ Guided Investigation

2021 ◽  
pp. 2003359
Author(s):  
Patrick Wai‐Keung Fong ◽  
Hanlin Hu ◽  
Zhiwei Ren ◽  
Kuan Liu ◽  
Li Cui ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Efficiency ◽  
Perovskite Solar Cells ◽  
High Humidity ◽  
Ambient Environment

An in-situ defect passivation through a green anti-solvent approach for high-efficiency and stable perovskite solar cells

2021 ◽  
Author(s):  
Chang Liu ◽  
Lei Huang ◽  
Xianyong Zhou ◽  
Xingzhu Wang ◽  
Jianxi Yao ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Efficiency ◽  
Perovskite Solar Cells ◽  
Defect Passivation

In-situ polymer-covered annealing strategy for high-efficiency carbon-electrode CsPbIBr2 solar cells

2021 ◽  
Author(s):  
Xiaoping Xie ◽  
Gang Liu ◽  
Peng Dong ◽  
Dawei Liu ◽  
Yufeng Ni ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Efficiency ◽  
Perovskite Solar Cells ◽  
Carbon Electrode ◽  
Inorganic Perovskite ◽  
Absorber Material

CsPbIBr2 has gained intense attention as the absorber material of all-inorganic perovskite solar cells (PSCs), owing to its upgraded stability and suitable bandgap. Yet, the efficiency level of CsPbIBr2 PSCs...

Guanidinium doping enabled low-temperature fabrication of high-efficiency all-inorganic CsPbI2Br perovskite solar cells

2019 ◽  
Vol 7 (48) ◽  
pp. 27640-27647 ◽  
Author(s):  
Junjie Ma ◽  
Minchao Qin ◽  
Yuhao Li ◽  
Tiankai Zhang ◽  
Jianbin Xu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Low Temperature ◽  
Crystallization Process ◽  
High Efficiency ◽  
Perovskite Solar Cells

Efficient guanidinium-doped CsPbI2Br PSCs were fabricated at a low temperature. In situ GIWAXS measurements were performed to understand the crystallization process.

scholarly journals Reducing Saturation-Current Density to Realize High-Efficiency Low-Bandgap Mixed Tin-Lead Halide Perovskite Solar Cells

2018 ◽  
Vol 9 (3) ◽  
pp. 1803135 ◽  
Author(s):  
Chongwen Li ◽  
Zhaoning Song ◽  
Dewei Zhao ◽  
Chuanxiao Xiao ◽  
Biwas Subedi ◽  
...  
Keyword(s):  
Solar Cells ◽  
Current Density ◽  
High Efficiency ◽  
Perovskite Solar Cells ◽  
Saturation Current ◽  
Low Bandgap ◽  
Saturation Current Density ◽  
Halide Perovskite ◽  
Lead Halide

scholarly journals In-situ formed and low-temperature deposited Nb: TiO2 compact-mesoporous layer for hysteresis-less perovskite solar cells with high performance

2020 ◽  
Author(s):  
Miao Yu ◽  
Haoxuan Sun ◽  
Xiaona Huang ◽  
Yichao Yan ◽  
Wanli Zhang
Keyword(s):  
Solar Cells ◽  
Low Temperature ◽  
High Performance ◽  
High Efficiency ◽  
Perovskite Solar Cells ◽  
Transport Layer ◽  
Electron Transport Layer ◽  
High Power Conversion Efficiency ◽  
Mesoporous Structures

Abstract Recently, reported perovskite solar cells (PSCs) with high power conversion efficiency (PCE) are mostly based on mesoporous structures containing mesoporous titanium oxide (TiO2 ) which is the main factor to reduce the overall hysteresis. However, existing fabrication approaches for mesoporous TiO2 generally require a high temperature annealing process. Moreover, there is still a long way to go for improvement in terms of increasing the electron conductivity and reducing the carrier recombination. Herein, a facile one-step, in situ and low-temperature method was developed to prepare an Nb: TiO2 compact-mesoporous layer to serve as both scaffold and electron transport layer (ETL) in PSCs. The Nb: TiO2 compact-mesoporous ETL based PSCs exhibit suppressed hysteresis, which is attributed to the synergistic effect of the large interface surface area caused by nano-pin morphology and the improved carrier transportation caused by Nb doping. Such a high-quality compact-mesoporous layer allows the PSC to achieve a remarkable PCE of 19.74%. This work promises an effective approach for creating hysteresis-less and high-efficiency PSCs based on compact-mesoporous structures with lower energy consumption and cost.

In situ growth of perovskite stacking layers for high-efficiency carbon-based hole conductor free perovskite solar cells

2019 ◽  
Vol 7 (22) ◽  
pp. 13777-13786 ◽  
Author(s):  
Jianhua Liu ◽  
Qisen Zhou ◽  
Nan Kyi Thein ◽  
Lei Tian ◽  
Donglin Jia ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Efficiency ◽  
Perovskite Solar Cells ◽  
Interfacial Properties ◽  
Carbon Electrode ◽  
In Situ Growth ◽  
Perovskite Layer ◽  
Electrode Interface ◽  
Stacking Structure

An additional perovskite stacking layer is in situ grown on the top of a perovskite layer forming a perovskite stacking structure to improve the interfacial properties at the perovskite/carbon electrode interface.

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