Wide-Bandgap All-Inorganic CsPbIBr<sub>2</sub> Top Cells With MoO<sub>x</sub>/Ag/TeO<sub>2</sub> Composite Transparent Anode Towards Efficient Four-Terminal Perovskite/Si Tandem Solar Cells

Wide-Bandgap All-Inorganic CsPbIBr<sub>2</sub> Top Cells With MoO<sub>x</sub>/Ag/TeO<sub>2</sub> Composite Transparent Anode Towards Efficient Four-Terminal Perovskite/Si Tandem Solar Cells

Wide-bandgap all-inorganic CsPbIBr<sub>2</sub> solar cells with MoO<sub>x</sub>/Ag/TeO<sub>2</sub> composite transparent electrode have been firstly used to construct a 4T perovskite/Si-heterojunction tandem cells. The calculation...

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Bibliographic Details
Main Authors:	Fengqin He, Wuxiong Fei, Yilin Wang, Chenbo Liu, Qirui Guo, Wensheng Lan, Gang Fan, Gang Lu, Dazheng Chen, Weidong Zhu, He Xi, Chunfu Zhang
Format:	Article
Language:	English
Published:	IEEE 2021-01-01
Series:	IEEE Photonics Journal
Subjects:	Wide-bandgap CsPbIBr<named-content xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" content-type="math" xlink:type="simple"> <inline-formula> <tex-math notation="LaTeX">$2$</tex-math> </inline-formula> </named-content> MoO<named-content xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" content-type="math" xlink:type="simple"> <inline-formula> <tex-math notation="LaTeX">$_{\text {x}}$</tex-math> </inline-formula> </named-content>/Ag/TeO<named-content xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" content-type="math" xlink:type="simple"> <inline-formula> <tex-math notation="LaTeX">$_2$</tex-math> </inline-formula> </named-content> four-terminal perovskite/Si tandem solar cells
Online Access:	https://ieeexplore.ieee.org/document/9382853/
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Summary:	Wide-bandgap all-inorganic CsPbIBr<sub>2</sub> solar cells with MoO<sub>x</sub>/Ag/TeO<sub>2</sub> composite transparent electrode have been firstly used to construct a 4T perovskite/Si-heterojunction tandem cells. The calculation results showed that the long wavelength transmission (600 to 1100 nm) of MoO<sub>x</sub>/Ag film can be enhanced remarkably by adding a TeO<sub>2</sub> optical capping layer. This resulted in an obviously increase of the PCE (J<sub>SC</sub>) from 10.70% (17.56 mA/cm<sup>2</sup>) to 14.76% (24.67 mA/cm<sup>2</sup>) for corresponding bottom Si cell in CsPbIBr<sub>2</sub>/Si devices, although the PCE of top CsPbIBr<sub>2</sub> cell decreased from 17.52% to 16.58%, the overall PCE of tandem device has increased from 28.22% to 31.34%. This J<sub>SC</sub>-dependent PCE improvement mainly came from the more balanced light absorption, which can be understood by the optical interference induced light field redistributions in CsPbIBr<sub>2</sub>/Si devices. Specially, comparing with the original Si cell, the J<sub>SC</sub> and PCE losses in bottom Si cell have been suppressed to about 33% and 32%, which are superior to most the reported pervoskite/Si tandem cells. Therefore, the tandem of Si cell and CsPbIBr<sub>2</sub> cell with optimized MoO<sub>x</sub>(20 nm)/Ag(8 nm)/TeO<sub>2</sub>(50 nm) transparent electrode could be the promising cost-effective photovoltaic in the future. This work is instructive to the fabrication of pervoskite/Si tandem solar cells.
ISSN:	1943-0655