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%.

High performance low-bandgap perovskite solar cells based on a high-quality mixed Sn–Pb perovskite film prepared by vacuum-assisted thermal annealing

2018 ◽  
Vol 6 (34) ◽  
pp. 16347-16354 ◽  
Author(s):  
Meiyue Liu ◽  
Ziming Chen ◽  
Qifan Xue ◽  
Sin Hang Cheung ◽  
Shu Kong So ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Thermal Annealing ◽  
High Performance ◽  
Power Conversion ◽  
Perovskite Solar Cells ◽  
Perovskite Solar Cell ◽  
Film Morphology ◽  
High Quality ◽  
Low Bandgap

Vacuum-assisted thermal annealing not only could improve film morphology and crystallinity, but also could accelerate the sublimation of undesired MACl. With the help of this process, we obtain a highly efficient low-bandgap CH3NH3Sn0.5Pb0.5IxCl3−x perovskite solar cell with a power conversion efficiency of 12.3%.

Polyethyleneimine-functionalized carbon nanotubes as an interlayer to bridge perovskite/carbon for all inorganic carbon-based perovskite solar cells

2019 ◽  
Vol 7 (38) ◽  
pp. 22005-22011 ◽  
Author(s):  
Yinglong Yang ◽  
Haining Chen ◽  
Chen Hu ◽  
Shihe Yang
Keyword(s):  
Carbon Nanotubes ◽  
Solar Cells ◽  
High Performance ◽  
Inorganic Carbon ◽  
Perovskite Solar Cells ◽  
Trap States ◽  
Functionalized Carbon Nanotubes ◽  
Carbon Based

A bifunctional PEI/CNT interlayer was designed to bridge the perovskite/carbon interface and passivate trap states for high-performance all inorganic CsPbI3-based C-PSCs.

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.

Design of surface termination for high-performance perovskite solar cells

2021 ◽  
Author(s):  
Yan Yang ◽  
Wangen Zhao ◽  
Tengteng Yang ◽  
Jiali Liu ◽  
Jingru Zhang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
High Performance ◽  
Perovskite Solar Cells ◽  
Lead Iodide ◽  
Surface Termination ◽  
Guanidinium Thiocyanate

Guanidinium thiocyanate was selected to modify the surface terminations of methylamine lead iodide (MAPbI3) perovskite films and a 21.26% PCE was acquired for a solar cell based on the MAPbI3 system, and the voltage deficit is reduced to 0.426 V.

scholarly journals High-performance hole conductor-free perovskite solar cell using a carbon nanotube counter electrode

RSC Advances ◽  
2020 ◽  
Vol 10 (59) ◽  
pp. 35831-35839 ◽  
Author(s):  
Mustafa K. A. Mohammed
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Carbon Nanotube ◽  
High Performance ◽  
Counter Electrode ◽  
Perovskite Solar Cells ◽  
Perovskite Solar Cell ◽  
Manufacturing Cost ◽  
Long Term Stability

Carbon-based perovskite solar cells (C-PSCs) are the most promising photovoltaic (PV) due to their low material and manufacturing cost and superior long-term stability.

High-performance carbon-based CsPbI2Br perovskite solar cells via small molecule modification

2021 ◽  
Vol 516 ◽  
pp. 230676
Author(s):  
Qianji Han ◽  
Fengyang Yu ◽  
Liang Wang ◽  
Shuzhang Yang ◽  
Xiaoyong Cai ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
High Performance ◽  
Perovskite Solar Cells ◽  
Carbon Based

High-performance g-C3N4 added carbon-based perovskite solar cells insulated by Al2O3 layer

Solar Energy ◽  
2019 ◽  
Vol 193 ◽  
pp. 859-865 ◽  
Author(s):  
Zong-Lin Yang ◽  
Zhen-Yun Zhang ◽  
Wei-Li Fan ◽  
Chao-sheng Hu ◽  
Ling Zhang ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Performance ◽  
Perovskite Solar Cells ◽  
Al2o3 Layer ◽  
Carbon Based

Synergistic effects of thiocyanate additive and cesium cations on improving the performance and initial illumination stability of efficient perovskite solar cells

2018 ◽  
Vol 2 (11) ◽  
pp. 2435-2441 ◽  
Author(s):  
Changlei Wang ◽  
Zhaoning Song ◽  
Yue Yu ◽  
Dewei Zhao ◽  
Rasha A. Awni ◽  
...  
Keyword(s):  
Solar Cells ◽  
Power Output ◽  
High Performance ◽  
Synergistic Effects ◽  
Perovskite Solar Cells ◽  
High Quality

The combination of Pb(SCN)2 and CsPbI3 results in high quality perovskite films, leading to high performance PVSCs with a stable power output.

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