Synergistic Passivation of Perovskite Absorber Films for Efficient Four-Terminal Perovskite/Silicon Tandem Solar Cells

Yan L, Qiu S, Yu B, Huang J, Qiu J, Zhang C, Guo F, Yang Y, Mai Y (2022)

Publication Type: Journal article

Publication year: 2022

Journal

Advanced Energy and Sustainability Research Wiley

DOI: 10.1002/aesr.202100199

Abstract

A high-performance semitransparent perovskite solar cell (PSC) with small photovoltage loss is highly desired to achieve efficient and stable perovskite/silicon tandem solar cells. Herein, a synergistic passivation strategy is developed to suppress the electronic defects at both the grain boundary and surface of a perovskite layer (Cs(0.05)FA(0.82)MA(0.13)Pb(I2.86Br0.14)). It is found that the incorporation of a small amount of sodium fluoride (NaF) into perovskite precursor solution modulates the crystallization process, which results in large crystal grains with enhanced conductivity at the grain boundaries. Meanwhile, a thin 2D perovskite layer is constructed on the surface of the 3D perovskite film by solution coating a layer of phenethylammonium iodide (PEAI), which passivates the surface defects and improves the stability of perovskite films. As a consequence, the optimized semitransparent p-i-n PSC delivers a high power conversion efficiency (PCE) of 17.55% with an open-circuit voltage of 1.11 V. Combining the semitransparent PSCs with a silicon cell, the efficiency of the four-terminal perovskite/silicon tandem solar cells reaches a PCE of 23.82%.

Involved external institutions

Jinan University CN China (CN) Changsha University of Science and Technology (CSUST) / 长沙理工大学 CN China (CN)

How to cite

APA:

Yan, L., Qiu, S., Yu, B., Huang, J., Qiu, J., Zhang, C.,... Mai, Y. (2022). Synergistic Passivation of Perovskite Absorber Films for Efficient Four-Terminal Perovskite/Silicon Tandem Solar Cells. Advanced Energy and Sustainability Research. https://dx.doi.org/10.1002/aesr.202100199

MLA:

Yan, Li, et al. "Synergistic Passivation of Perovskite Absorber Films for Efficient Four-Terminal Perovskite/Silicon Tandem Solar Cells." Advanced Energy and Sustainability Research (2022).

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