Kumar Praveen, Ahmad Khursheed, Mobin Shaikh M
Department of Chemistry, Indian Institute of Technology Indore Simrol, Khandwa Road Indore 453552 India
Department of Biosciences and Bio-Medical Engineering, Indian Institute of Technology Indore Simrol, Khandwa Road Indore 453552 India.
Nanoscale Adv. 2023 Feb 16;5(6):1624-1630. doi: 10.1039/d3na00029j. eCollection 2023 Mar 14.
Hybrid perovskites based on bismuth are good candidates for developing lead-free and air-stable photovoltaics, but they have historically been constrained by poor surface morphologies and large band-gap energies. Monovalent silver cations are incorporated into iodobismuthates as part of a novel materials processing method to fabricate improved bismuth-based thin-film photovoltaic absorbers. However, a number of fundamental characteristics prevented them from achieving better efficiency. We examine bismuth iodide perovskite made of silver with improvements in surface morphology and a narrow band gap, and we achieve high power conversion efficiency. AgBiI perovskite was used in the fabrication of PSCs as a material for light absorption, and its optoelectronic proficiencies were also studied. We reduced the band gap to 1.89 eV and achieved a maximum power conversion efficiency of 0.96% using the solvent engineering approach. Additionally, simulation studies verified an efficiency of 13.26% by using AgBiI as a light absorber perovskite material.
基于铋的混合钙钛矿是开发无铅且空气稳定的光伏器件的良好候选材料，但它们在历史上一直受到表面形貌不佳和带隙能量大的限制。作为一种新型材料加工方法的一部分，一价银阳离子被掺入碘铋酸盐中，以制造性能更好的铋基薄膜光伏吸收体。然而，一些基本特性阻碍了它们实现更高的效率。我们研究了由银制成的碘化铋钙钛矿，其表面形貌得到改善且带隙变窄，并且我们实现了高功率转换效率。AgBiI钙钛矿被用作制备PSC的光吸收材料，同时也对其光电性能进行了研究。我们通过溶剂工程方法将带隙降低至1.89 eV，并实现了0.96%的最大功率转换效率。此外，模拟研究证实，使用AgBiI作为光吸收钙钛矿材料时效率可达13.26%。
