Bidentate ligand modified CsPbI2Br quantum dots as an interface for high-performance carbon-based perovskite solar cells

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.

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High-Performance Perovskite Solar Cells Using Graphene Quantum Dots Modified SnO2/ZnO Photoelectrode

Materials Today Energy ◽

10.1016/j.mtener.2021.100853 ◽

2021 ◽

pp. 100853

Author(s):

G. Nagaraj ◽

Mustafa K.A. Mohammed ◽

Masoud Shekargoftar ◽

P. Sasikumar ◽

P. Sakthivel ◽

...

Keyword(s):

Quantum Dots ◽

Solar Cells ◽

High Performance ◽

Graphene Quantum Dots ◽

Perovskite Solar Cells

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Improving interfacial charge transfer by multi-functional additive for high-performance carbon-based perovskite solar cells

Applied Physics Letters ◽

10.1063/5.0061869 ◽

2021 ◽

Vol 119 (15) ◽

pp. 151104

Author(s):

Yu Zou ◽

Wenjin Yu ◽

Zhenyu Tang ◽

Xiangdong Li ◽

Haoqing Guo ◽

...

Keyword(s):

Solar Cells ◽

Charge Transfer ◽

High Performance ◽

Perovskite Solar Cells ◽

Interfacial Charge Transfer ◽

Functional Additive ◽

Interfacial Charge ◽

Carbon Based

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

Journal of Power Sources ◽

10.1016/j.jpowsour.2021.230676 ◽

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

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

Solar Energy ◽

10.1016/j.solener.2019.09.100 ◽

2019 ◽

Vol 193 ◽

pp. 859-865 ◽

Cited By ~ 4

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

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

Sustainable Energy & Fuels ◽

10.1039/d0se00774a ◽

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%.

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