scholarly journals Template‐Assisted Formation of High‐Quality α‐Phase HC(NH 2 ) 2 PbI 3 Perovskite Solar Cells

2019 ◽  
Vol 6 (21) ◽  
pp. 1901591 ◽  
Author(s):  
Pengju Shi ◽  
Yong Ding ◽  
Yingke Ren ◽  
Xiaoqiang Shi ◽  
Zulqarnain Arain ◽  
...  
Keyword(s):  
Solar Cells ◽  
Perovskite Solar Cells ◽  
High Quality ◽  
Α Phase

Precursor engineering for high-quality Cs2AgBiBr6 films toward efficient lead-free double perovskite solar cells

2021 ◽  
Author(s):  
Ping Hou ◽  
Wenxiang Yang ◽  
Ning Wan ◽  
Zhi Fang ◽  
Jinju Zheng ◽  
...  
Keyword(s):  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Control Sample ◽  
Double Perovskite ◽  
Lead Free ◽  
High Quality ◽  
Precursor Engineering ◽  
First Time

We report a facile BiBr3(DMSO)2 adduct process to produce high-quality Cs2AgBiBr6 films with large grains for the first time, which leads to an enhancement of over 40% on the PCE of Cs2AgBiBr6-based solar cells compared to that of the control sample.

scholarly journals Ambient Air Temperature Assisted Crystallization for Inorganic CsPbI2Br Perovskite Solar Cells

Molecules ◽  
2021 ◽  
Vol 26 (11) ◽  
pp. 3398
Author(s):  
Yi Long ◽  
Kun Liu ◽  
Yongli Zhang ◽  
Wenzhe Li
Keyword(s):  
Solar Cells ◽  
Air Temperature ◽  
High Performance ◽  
Defect Density ◽  
Perovskite Solar Cells ◽  
Ambient Air ◽  
Dark Phase ◽  
High Quality ◽  
Ambient Air Temperature ◽  
Air Atmosphere

Inorganic cesium lead halide perovskites, as alternative light absorbers for organic–inorganic hybrid perovskite solar cells, have attracted more and more attention due to their superb thermal stability for photovoltaic applications. However, the humid air instability of CsPbI2Br perovskite solar cells (PSCs) hinders their further development. The optoelectronic properties of CsPbI2Br films are closely related to the quality of films, so preparing high-quality perovskite films is crucial for fabricating high-performance PSCs. For the first time, we demonstrate that the regulation of ambient temperature of the dry air in the glovebox is able to control the growth of CsPbI2Br crystals and further optimize the morphology of CsPbI2Br film. Through controlling the ambient air temperature assisted crystallization, high-quality CsPbI2Br films are obtained, with advantages such as larger crystalline grains, negligible crystal boundaries, absence of pinholes, lower defect density, and faster carrier mobility. Accordingly, the PSCs based on as-prepared CsPbI2Br film achieve a power conversion efficiency of 15.5% (the maximum stabilized power output of 15.02%). Moreover, the optimized CsPbI2Br films show excellent robustness against moisture and oxygen and maintain the photovoltaic dark phase after 3 h aging in an air atmosphere at room temperature and 35% relative humidity (R.H.). In comparison, the pristine films are completely converted to the yellow phase in 1.5 h.

scholarly journals High-Performance Formamidinium-Based Perovskite Solar Cells via Microstructure-Mediated δ-to-α Phase Transformation

2017 ◽  
Vol 29 (7) ◽  
pp. 3246-3250 ◽  
Author(s):  
Tanghao Liu ◽  
Yingxia Zong ◽  
Yuanyuan Zhou ◽  
Mengjin Yang ◽  
Zhen Li ◽  
...  
Keyword(s):  
Phase Transformation ◽  
Solar Cells ◽  
High Performance ◽  
Perovskite Solar Cells ◽  
Α Phase

Surface modification via self-assembling large cations for improved performance and modulated hysteresis of perovskite solar cells

2019 ◽  
Vol 7 (12) ◽  
pp. 6793-6800 ◽  
Author(s):  
Tongle Bu ◽  
Jing Li ◽  
Wenchao Huang ◽  
Wenxin Mao ◽  
Fei Zheng ◽  
...  
Keyword(s):  
Surface Modification ◽  
Solar Cells ◽  
Perovskite Solar Cells ◽  
High Quality ◽  
Self Assembling ◽  
Improved Performance

Novel surface modification of self-assembling large cations enables the achievement of high quality perovskite films for hysteresis-free and stable solar cells with an optimized efficiency over 20%.

Highly efficient planar perovskite solar cells achieved by simultaneous defect engineering and formation kinetic control

2018 ◽  
Vol 6 (46) ◽  
pp. 23865-23874 ◽  
Author(s):  
Jiaqi Cheng ◽  
Hong Zhang ◽  
Shaoqing Zhang ◽  
Dan Ouyang ◽  
Zhanfeng Huang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Low Temperature ◽  
Power Conversion Efficiency ◽  
Power Conversion ◽  
Perovskite Solar Cells ◽  
Precursor Solution ◽  
Kinetic Control ◽  
Defect Engineering ◽  
High Quality ◽  
Formation Kinetic

Incorporation of non-fullerene acceptor into perovskite precursor solution is demonstrated to form high-quality perovskite films with low defect concentrations. The power conversion efficiency of low-temperature processed perovskite solar cells is improved up to 20.10%.

Suppressing intrinsic self-doping of CsPbIBr2 films for high-performance all-inorganic, carbon-based perovskite solar cells

2020 ◽  
Vol 4 (9) ◽  
pp. 4506-4515
Author(s):  
Zeyang Zhang ◽  
Fengqin He ◽  
Weidong Zhu ◽  
Dandan Chen ◽  
Wenming Chai ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Doping Level ◽  
High Performance ◽  
Inorganic Carbon ◽  
Perovskite Solar Cells ◽  
High Quality ◽  
Carbon Based

High-quality CsPbIBr2 films with a much lower self-doping level are obtained by the use of a CsI-rich precursor, which enables the fabrication of an all-inorganic, carbon-based solar cell with a superior efficiency of 10.48%.

scholarly journals High-quality CH3NH3PbI3 thin film fabricated via intramolecular exchange for efficient planar heterojunction perovskite solar cells

2016 ◽  
Vol 39 ◽  
pp. 304-310 ◽  
Author(s):  
Shuigen Li ◽  
Bingchu Yang ◽  
Runsheng Wu ◽  
Chen Zhang ◽  
Chujun Zhang ◽  
...  
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Perovskite Solar Cells ◽  
High Quality ◽  
Intramolecular Exchange ◽  
Planar Heterojunction
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