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.

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

2021 ◽  
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

Abstract In 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. Especially, after the addition of CsSn0.2Pb0.8I3 QDs, improvement of the power conversion efficiency (PCE) from 12.80% to 14.22% can be obtained, in comparison to the pristine device. Moreover, the experimental results are analyzed through the simulation of the one-dimensional perovskite/tin-doped PQDs heterojunction.

scholarly journals Effective Improvement of the Photovoltaic Performance of Carbon-Based Perovskite Solar Cells by Additional Solvents

2016 ◽  
Vol 8 (4) ◽  
pp. 347-357 ◽  
Author(s):  
Chenxi Zhang ◽  
Yudan Luo ◽  
Xiaohong Chen ◽  
Yiwei Chen ◽  
Zhuo Sun ◽  
...  
Keyword(s):  
Solar Cells ◽  
Photovoltaic Performance ◽  
Perovskite Solar Cells ◽  
Carbon Based

Laser induced core-shell liquid metal quantum dots for high-efficiency carbon-based perovskite solar cells

2021 ◽  
pp. 150470
Author(s):  
Shuhan Li ◽  
Yang Li ◽  
Ke Liu ◽  
Mengwei Chen ◽  
Weidong Peng ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Liquid Metal ◽  
High Efficiency ◽  
Perovskite Solar Cells ◽  
Core Shell ◽  
Carbon Based

Tailoring interfacial carrier dynamics via rationally designed uniform CsPbBrxI3−x quantum dots for high-efficiency perovskite solar cells

2020 ◽  
Vol 8 (48) ◽  
pp. 26098-26108
Author(s):  
Shuguang Zhang ◽  
Young Jun Yoon ◽  
Xun Cui ◽  
Yajing Chang ◽  
Meng Zhang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
High Efficiency ◽  
Photovoltaic Performance ◽  
Perovskite Solar Cells ◽  
Carrier Dynamics

The photovoltaic performance of perovskite solar cells is enhanced by interfacing with rationally designed CsPbBrxI3−x quantum dots.

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