scholarly journals Improved Photovoltaic Performance of CsPbI2Br Perovskite Films via Bivalent Metal Chloride Doping

2021 ◽  
Vol 9 ◽  
Author(s):  
Hong Wei Qiao ◽  
Mengjiong Chen ◽  
Ziren Zhou ◽  
Qilin Cheng ◽  
Yu Hou ◽  
...  
Keyword(s):  
High Efficiency ◽  
Power Conversion ◽  
Photovoltaic Performance ◽  
Perovskite Solar Cells ◽  
Metal Chloride ◽  
High Quality ◽  
Bivalent Metal ◽  
Inorganic Perovskite ◽  
Chloride Salts ◽  
Defect Densities

Cesium-based all-inorganic perovskite absorbers have attracted increasing attention due to their superior thermal stability, compared to their organic–inorganic counterparts. Up to now, it is a challenge to fabricate high-efficiency all-inorganic perovskite solar cells (PSCs) with low defect densities. Herein, we used bivalent metal chloride salts (SrCl2 and NiCl2) to optimize CsPbI2Br films. The experimental results indicate that this method could deliver high-quality films with improved electronic property. As a result, the champion device based on the 0.01 M SrCl2–doped CsPbI2Br film achieved a power conversion efficiency (PCE) of 16.07% with a high open voltage (VOC) of 1,322 mV, which is about 18% higher than that of the pristine device.

scholarly journals Hot-Casting Large-Grain Perovskite Film for Efficient Solar Cells: Film Formation and Device Performance

2020 ◽  
Vol 12 (1) ◽  
Author(s):  
Kejun Liao ◽  
Chengbo Li ◽  
Lisha Xie ◽  
Yuan Yuan ◽  
Shurong Wang ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Efficiency ◽  
Film Formation ◽  
Photovoltaic Performance ◽  
Perovskite Solar Cells ◽  
Deposition Process ◽  
Precursor Chemistry ◽  
High Quality ◽  
Factors Affecting ◽  
Casting Technique

AbstractOrganic–inorganic metal halide perovskite solar cells (PSCs) have recently been considered as one of the most competitive contenders to commercial silicon solar cells in the photovoltaic field. The deposition process of a perovskite film is one of the most critical factors affecting the quality of the film formation and the photovoltaic performance. A hot-casting technique has been widely implemented to deposit high-quality perovskite films with large grain size, uniform thickness, and preferred crystalline orientation. In this review, we first review the classical nucleation and crystal growth theory and discuss those factors affecting the hot-casted perovskite film formation. Meanwhile, the effects of the deposition parameters such as temperature, thermal annealing, precursor chemistry, and atmosphere on the preparation of high-quality perovskite films and high-efficiency PSC devices are comprehensively discussed. The excellent stability of hot-casted perovskite films and integration with scalable deposition technology are conducive to the commercialization of PSCs. Finally, some open questions and future perspectives on the maturity of this technology toward the upscaling deposition of perovskite film for related optoelectronic devices are presented.

A methylammonium iodide healing method for CH3NH3PbI3 perovskite solar cells with high fill factor over 80%

2021 ◽  
Vol 42 (11) ◽  
pp. 112202
Author(s):  
Zhen Li ◽  
Guanjun Yang
Keyword(s):  
Heat Treatment ◽  
Thermal Decomposition ◽  
Solar Cells ◽  
Fill Factor ◽  
Power Conversion ◽  
Photovoltaic Performance ◽  
Perovskite Solar Cells ◽  
Photoluminescence Intensity ◽  
High Quality ◽  
High Fill Factor

Abstract Repressing the thermal decomposition during the process of heat treatment plays an indispensable part in the preparation of perovskite films. Here, a methylammonium iodide healing method was applied to prevent the volatilization of the organic component inside the perovskite structure during the heat treatment. High-quality CH3NH3PbI3 film with a much larger grain size over 800 nm was successfully fabricated via this healing method. Besides, the absorption and photoluminescence intensity were also both improved. Finally, the best power conversion efficiency of 18.89% with a fill factor over 80% was realized in an n–i–p configuration while possessing outstanding stability. This work suggests that methylammonium iodide healing method is a reliable way to promote crystal growth and improve the photovoltaic performance and humidity stability of the CH3NH3PbI3 solar cells.

The design of dithieno[3,2-b:2′,3′-d]pyrrole organic photovoltaic materials for high-efficiency organic/perovskite solar cells

2020 ◽  
Vol 8 (43) ◽  
pp. 22572-22592
Author(s):  
Jinru Cao ◽  
Fuqiang Du ◽  
Linqiang Yang ◽  
Weihua Tang
Keyword(s):  
Solar Cells ◽  
High Efficiency ◽  
Power Conversion ◽  
Photovoltaic Performance ◽  
Perovskite Solar Cells ◽  
Material Design ◽  
Organic Photovoltaic ◽  
High Power Conversion Efficiency ◽  
Photovoltaic Materials ◽  
Organic Photovoltaic Materials

The design of dithieno[3,2-b:2′,3′-d]pyrrole (DTP) based FREAs and dopant-free HTMs for record high power conversion efficiency and stable solar cells is updated to give insightful view on material design and device strategies to boast photovoltaic performance.

A general strategy to prepare high-quality inorganic charge-transporting layers for efficient and stable all-layer-inorganic perovskite solar cells

2019 ◽  
Vol 7 (31) ◽  
pp. 18603-18611 ◽  
Author(s):  
Shasha Zhang ◽  
Weitao Chen ◽  
Shaohang Wu ◽  
Rui Chen ◽  
Yuqian Huang ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Efficiency ◽  
Perovskite Solar Cells ◽  
General Strategy ◽  
High Quality ◽  
Inorganic Perovskite

A general strategy for fabrication of high-quality inorganic CTLs on top of an inorganic perovskite to achieve high efficiency and 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.

scholarly journals Metal-Doped Copper Indium Disulfide Heterostructure: Environment-Friendly Hole-Transporting Material toward Photovoltaic Application in Organic-Inorganic Perovskite Solar Cell

Proceedings ◽  
2019 ◽  
Vol 41 (1) ◽  
pp. 74
Author(s):  
Kobra Valadi ◽  
Ali Maleki
Keyword(s):  
Photovoltaic Performance ◽  
Perovskite Solar Cells ◽  
Environment Friendly ◽  
Inorganic Perovskite ◽  
Copper Indium Disulfide ◽  
Photovoltaic Application ◽  
Copper Indium ◽  
Hole Transporting ◽  
Hole Transporting Material ◽  
Metal Doped

In this plan, we use Praseodymium metal-doped copper indium disulfide (Pr-doped CIS) heterostructure as hole-transporting materials (HTMs) in the FTO/TiO2/Perovskite absorber/HTM/ Au device. And photovoltaic performance of these Pr-doped CIS heterostructure was investigated in the fabrication of the organic-inorganic perovskite solar cells (organic-inorganic PSCs).

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