Band Alignment Strategy for Printable Triple Mesoscopic Perovskite Solar Cells with Enhanced Photovoltage

2019 ◽  
Vol 2 (3) ◽  
pp. 2034-2042 ◽  
Author(s):  
Jianhong Zhao ◽  
Yumin Zhang ◽  
Xinbo Zhao ◽  
Jin Zhang ◽  
Hai Wang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Band Alignment ◽  
Alignment Strategy

Bulky Cations Improve Band Alignment and Efficiency in Sn-Based Perovskite Solar Cells

2020 ◽  
Author(s):  
Deepak Thrithamarassery Gangadharan ◽  
David A. Valverde-Chávez ◽  
Andres-Felipe Castro-Mendez ◽  
Vivek Prakash ◽  
Ricardo Izquierdo ◽  
...  
Keyword(s):  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Band Alignment

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.

Molecular Passivation of MoO3: Band Alignment and Protection of Charge Transport Layers in Vacuum-Deposited Perovskite Solar Cells

2019 ◽  
Vol 31 (17) ◽  
pp. 6945-6949 ◽  
Author(s):  
Daniel Pérez-del-Rey ◽  
Lidón Gil-Escrig ◽  
Kassio P. S. Zanoni ◽  
Chris Dreessen ◽  
Michele Sessolo ◽  
...  
Keyword(s):  
Solar Cells ◽  
Charge Transport ◽  
Perovskite Solar Cells ◽  
Band Alignment

Toward Efficient and Stable Perovskite Solar Cells by 2D Interface Energy Band Alignment

2020 ◽  
pp. 2001683
Author(s):  
Weiwei Wang ◽  
Zhenhuang Su ◽  
Bo Sun ◽  
Lei Tao ◽  
Hao Gu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Energy Band ◽  
Perovskite Solar Cells ◽  
Interface Energy ◽  
Band Alignment

Humidity controlled sol-gel Zr/TiO2 with optimized band alignment for efficient planar perovskite solar cells

Solar Energy ◽  
2016 ◽  
Vol 139 ◽  
pp. 290-296 ◽  
Author(s):  
Tongle Bu ◽  
Min Wen ◽  
Haiyuan Zou ◽  
Junqing Wu ◽  
Peng Zhou ◽  
...  
Keyword(s):  
Solar Cells ◽  
Sol Gel ◽  
Perovskite Solar Cells ◽  
Band Alignment

Band alignment of Pb–Sn mixed triple cation perovskites for inverted solar cells with negligible hysteresis

2019 ◽  
Vol 7 (15) ◽  
pp. 9154-9162 ◽  
Author(s):  
Long Ji ◽  
Xiangzhao Zhang ◽  
Ting Zhang ◽  
Yafei Wang ◽  
Feng Wang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Band Alignment ◽  
Inverted Structure

We exploit the Sn ratio to optimize the band alignment in Pb–Sn mixed triple perovskite solar cells with an inverted structure.

Materials requirements for improving the electron transport layer/perovskite interface of perovskite solar cells determined via numerical modeling

MRS Advances ◽  
2020 ◽  
Vol 5 (50) ◽  
pp. 2603-2610
Author(s):  
Jared D. Friedl ◽  
Ramez Hosseinian Ahangharnejhad ◽  
Adam B. Phillips ◽  
Michael J. Heben
Keyword(s):  
Numerical Modeling ◽  
Solar Cells ◽  
Electron Transport ◽  
High Performance ◽  
Perovskite Solar Cells ◽  
Surface Recombination ◽  
Band Alignment ◽  
Transport Layer ◽  
Electron Transport Layer ◽  
Effective Electron

AbstractPerovskite solar cells continue to garner significant attention in the field of photovoltaics. As the optoelectronic properties of the absorbers become better understood, attention has turned to more deeply understanding the contribution of charge transport layers for efficient extraction of carriers. Titanium oxide is known to be an effective electron transport layer (ETL) in planar perovskite solar cells, but it is unlikely to result in the best device performance possible. To investigate the importance of band energy alignment between the electron transport layer and perovskite, we employ numerical modeling as a function of conduction band offset between these layers, interface recombination velocity, and ETL doping levels. Our simulations offer insight into the advantages of energy band alignment and allow us to determine a range of surface recombination velocities and ETL doping densities that will allow us to identify novel high performance ETL materials.

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