In:
Journal of Materials Chemistry A, Royal Society of Chemistry (RSC), Vol. 11, No. 20 ( 2023), p. 10605-10611
Abstract:
Sn-based perovskites have intrinsic defects, such as Sn vacancies, oxidised components (Sn 4+ ), and local lattice strain in the perovskite crystalline structure. In this study, Zn metal powder (Zn 0 ) was introduced to reduce Sn oxidation in the solution step based on the redox potential difference. Additionally, Zn 2+ was introduced in the perovskite precursor, which decreased the intrinsic defects and lattice strain of the perovskite films. The diffusion length, particularly that of the hole, increased with a reduction in the lattice strain, and Zn doping led to interfacial energy-level alignment of the perovskite and hole-transporting layers. The reduced lattice strain decreased the defect density and charge carrier recombination of perovskite devices. The power conversion efficiency of the Zn-doped Sn-based perovskite solar cell was improved to 11.39% compared to the 8.56% of the reference device.
Type of Medium:
Online Resource
ISSN:
2050-7488
,
2050-7496
Language:
English
Publisher:
Royal Society of Chemistry (RSC)
Publication Date:
2023
detail.hit.zdb_id:
2702232-8
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