Details

Autor(en) / Beteiligte

• Momblona, Cristina
• Kanda, Hiroyuki
• Sutanto, Albertus Adrian
• Mensi, Mounir
• Roldán-Carmona, Cristina
• Nazeeruddin, Mohammad Khaja

Titel

Co-evaporation as an optimal technique towards compact methylammonium bismuth iodide layers

Ist Teil von

• Scientific reports, 2020-06, Vol.10 (1), Article 10640

Ort / Verlag

London: Nature Publishing Group

Erscheinungsjahr

2020

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• Abstract The most studied perovskite-based solar cells reported up to date contain the toxic lead in its composition. Photovoltaic research and development towards non-toxic, lead-free perovskite solar cells are critical to finding alternatives to reduce human health concerns associated with them. Bismuth-based perovskite variants, especially in the form of methylammonium bismuth iodide (MBI), is a good candidate for the non-toxic light absorber. However, the reported perovskite variant MBI thin films prepared by the solution process so far suffers from poor morphology and surface coverage. In this work, we investigate for the first time the optoelectronic, crystallographic and morphological properties of MBI thin films prepared via thermal co-evaporation of MAI and BiI 3 . We find by modifying the precursor ratio that the layer with pure MBI composition lead to uniform, compact and homogeneous layers, broadening the options of deposition techniques for lead-free based perovskite solar cells.