High-Quality Borophene Quantum Dots Realization and Their Application in Photovoltaic Device

2021 ◽  
Author(s):  
Anran Zhao ◽  
Yu Han ◽  
Yuhang Che ◽  
Qi Liu ◽  
Xiyang Wang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Surface Modification ◽  
Solar Cells ◽  
Charge Transport ◽  
Perovskite Solar Cells ◽  
Photovoltaic Device ◽  
Effective Strategy ◽  
High Quality ◽  
Recombination Probability ◽  
Carrier Recombination

Surface modification is an effective strategy to promote charge transport and extraction, reduce the carrier recombination probability and ultimately improve the performance of perovskite solar cells (PSCs). Borophene is the...

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%.

scholarly journals Black Phosphorus Quantum Dots Induced High‐Quality Perovskite Film for Efficient and Thermally Stable Planar Perovskite Solar Cells

Solar RRL ◽  
2019 ◽  
Vol 3 (8) ◽  
pp. 1900132 ◽  
Author(s):  
Weitao Yang ◽  
Jiehuan Chen ◽  
Xiaomei Lian ◽  
Jun Li ◽  
Fenfa Yao ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Black Phosphorus ◽  
Thermally Stable ◽  
High Quality ◽  
Black Phosphorus Quantum Dots

scholarly journals Surface modification induced by perovskite quantum dots for triple-cation perovskite solar cells

Nano Energy ◽  
2020 ◽  
Vol 67 ◽  
pp. 104189 ◽  
Author(s):  
Wenqiang Yang ◽  
Rui Su ◽  
Deying Luo ◽  
Qin Hu ◽  
Feng Zhang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Surface Modification ◽  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Perovskite Quantum Dots

scholarly journals Cost-efficient, Effect of Low-Quality PbI2 Purification to Enhance Performances of Perovskite Quantum Dots and Perovskite Solar Cells

Energies ◽  
2021 ◽  
Vol 14 (1) ◽  
pp. 201
Author(s):  
ChaeHyun Lee ◽  
YeJi Shin ◽  
Gyeong G. Jeon ◽  
Dongwoo Kang ◽  
Jiwon Jung ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Photophysical Properties ◽  
Perovskite Solar Cells ◽  
Precursor Solution ◽  
Modern Society ◽  
High Quality ◽  
Material Development ◽  
Research Fields ◽  
Perovskite Quantum Dots

In modern society, high-quality material development and a large stable supply are key to perform frontier research and development. However, there are negative issues to address to utilize high-quality resources with a large stable supply for research, such as economic accessibility, commercialization, and so on. One of the cutting-edge research fields, perovskite-related research, usually requires high-quality chemicals with outstanding purity (>99%). We developed an economically feasible PbI2 precursor with around 1/20 cost-down for perovskite/perovskite quantum dots through recrystallization and/or hydrothermal purification. Following the methodology, the quantum dots from both as-prepared and purified PbI2 demonstrated identical photophysical properties, with a photoluminescence quantum yield (PLQY) of 52.61% using the purified PbI2 vs. 45.83% PLQY using commercial PbI2. The role of hydrothermal energy was also checked against the problematic PbI2, and we checked whether the hydrothermal energy could contribute to the hindrance of undesired particle formation in the precursor solution, which enables them to form enlarged grain size from 179 ± 80 to 255 ± 130 nm for higher photoconversion efficiency of perovskite solar cells from 14.77 ± 1.82% to 15.18 ± 1.92%.

Efficient Defect Passivation with Niacin for High-Performance and Stable Perovskite Solar Cells

2021 ◽  
Author(s):  
Jing Ren ◽  
Shurong Wang ◽  
Jianxing Xia ◽  
Chengbo Li ◽  
Lisha Xie ◽  
...  
Keyword(s):  
Solar Cells ◽  
Charge Carrier ◽  
High Performance ◽  
Perovskite Solar Cells ◽  
Trap States ◽  
Carrier Recombination ◽  
Defect Passivation ◽  
Recombination Centers ◽  
Charge Carrier Recombination ◽  
Halide Perovskite

Defects, inevitably produced in the solution-processed halide perovskite films, can act as charge carrier recombination centers to induce severe energy loss in perovskite solar cells (PSCs). Suppressing these trap states...

scholarly journals Effects of CsSnxPb1−xI3 Quantum Dots as Interfacial Layer on Photovoltaic Performance of Carbon-Based Perovskite Solar Cells

2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Chi Zhang ◽  
Zhiyuan He ◽  
Xuanhui Luo ◽  
Rangwei Meng ◽  
Mengwei Chen ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Photovoltaic Performance ◽  
Perovskite Solar Cells ◽  
Photogenerated Electron ◽  
Depletion Region ◽  
Band Alignment ◽  
Back Surface ◽  
The One ◽  
Carbon Based

AbstractIn this work, inorganic tin-doped perovskite quantum dots (PQDs) are incorporated into carbon-based perovskite solar cells (PSCs) to improve their photovoltaic performance. On the one hand, by controlling the content of Sn2+ doping, the energy level of the tin-doped PQDs can be adjusted, to realize optimized band alignment and enhanced separation of photogenerated electron–hole pairs. On the other hand, the incorporation of tin-doped PQDs provided with a relatively high acceptor concentration due to the self-p-type doping effect is able to reduce the width of the depletion region near the back surface of the perovskite, thereby enhancing the hole extraction. Particularly, after the addition of CsSn0.2Pb0.8I3 quantum dots (QDs), improvement of the power conversion efficiency (PCE) from 12.80 to 14.22% can be obtained, in comparison with the pristine device. Moreover, the experimental results are analyzed through the simulation of the one-dimensional perovskite/tin-doped PQDs heterojunction.

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.

Rapid Microwave-Assisted Synthesis of SnO2 Quantum Dots for Efficient Planar Perovskite Solar Cells

2021 ◽  
Vol 4 (2) ◽  
pp. 1887-1893
Author(s):  
Zhengjie Xu ◽  
Yue Jiang ◽  
Zhuoxi Li ◽  
Cong Chen ◽  
Xiangyu Kong ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Microwave Assisted Synthesis ◽  
Microwave Assisted
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