Passivating Charged Defects with 1,6-Hexamethylenediamine To Realize Efficient and Stable Tin-Based Perovskite Solar Cells

2020 ◽  
Vol 124 (30) ◽  
pp. 16289-16299
Author(s):  
Ben Ma ◽  
Junwen Chen ◽  
Minghao Wang ◽  
Xin Xu ◽  
Jie Qian ◽  
...  
Keyword(s):  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Charged Defects

scholarly journals Reconfiguration of interfacial energy band structure for high-performance inverted structure perovskite solar cells

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Moyao Zhang ◽  
Qi Chen ◽  
Rongming Xue ◽  
Yu Zhan ◽  
Cheng Wang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Band Structure ◽  
Interfacial Energy ◽  
Energy Band ◽  
Surface Defects ◽  
Perovskite Solar Cells ◽  
Energy Band Structure ◽  
Charged Surface ◽  
Inverted Structure ◽  
Charged Defects

Abstract Charged defects at the surface of the organic–inorganic perovskite active layer are detrimental to solar cells due to exacerbated charge carrier recombination. Here we show that charged surface defects can be benign after passivation and further exploited for reconfiguration of interfacial energy band structure. Based on the electrostatic interaction between oppositely charged ions, Lewis-acid-featured fullerene skeleton after iodide ionization (PCBB-3N-3I) not only efficiently passivates positively charged surface defects but also assembles on top of the perovskite active layer with preferred orientation. Consequently, PCBB-3N-3I with a strong molecular electric dipole forms a dipole interlayer to reconfigure interfacial energy band structure, leading to enhanced built-in potential and charge collection. As a result, inverted structure planar heterojunction perovskite solar cells exhibit the promising power conversion efficiency of 21.1% and robust ambient stability. This work opens up a new window to boost perovskite solar cells via rational exploitation of charged defects beyond passivation.

Electron-deficient 4-nitrophthalonitrile passivated efficient perovskite solar cells with efficiency exceeding 22%

2021 ◽  
Vol 5 (8) ◽  
pp. 2347-2353
Author(s):  
Longhui Deng ◽  
Zhihao Zhang ◽  
Yifeng Gao ◽  
Qiu Xiong ◽  
Zicheng Li ◽  
...  
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Power Conversion ◽  
Perovskite Solar Cells ◽  
Improved Stability ◽  
Charged Defects

We proved that electron-deficient 4-nitrophthalonitrile with σ–π accepting NO2 and –CN can passivate the charged defects in perovskite solar cells, which achieve a power conversion efficiency (PCE) of 22.1% and improved stability.

A thiourea additive-based quadruple cation lead halide perovskite with an ultra-large grain size for efficient perovskite solar cells

Nanoscale ◽  
2019 ◽  
Vol 11 (45) ◽  
pp. 21824-21833 ◽  
Author(s):  
Jyoti V. Patil ◽  
Sawanta S. Mali ◽  
Chang Kook Hong
Keyword(s):  
Thin Films ◽  
Grain Size ◽  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Power Conversion ◽  
Perovskite Solar Cells ◽  
Inorganic Perovskite ◽  
Halide Perovskite ◽  
Lead Halide

Controlling the grain size of the organic–inorganic perovskite thin films using thiourea additives now crossing 2 μm size with >20% power conversion efficiency.

A new class of passivating molecules for perovskite solar cells: preliminary insights.

2020 ◽  
Author(s):  
Lucas Scalon ◽  
Francineide Lopes de Araújo ◽  
Caio Costa Oliveira ◽  
Ana Flávia Nogueira
Keyword(s):  
Solar Cells ◽  
Perovskite Solar Cells ◽  
New Class
Sign in / Sign up

Export Citation Format

Share Document