Thermal Evaporated Bismuth Triiodide (BiI3) Thin Films for Photovoltaic Applications

Autor(es)

Coutinho, Natalia F. ^[1] ; Menlo, Rafael B. ^[1] ; Borrero, V, Nelson F. ; Marques, Francisco C. ^[2]

Afiliação do(s) autor(es)

^[1] Univ Estadual Campinas, Gleb Wataghin Inst Phys, BR-13083859 Campinas, SP - Brazil

^[2] Borrero, Nelson F., V, Univ Estadual Campinas, Gleb Wataghin Inst Phys, BR-13083859 Campinas, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: MRS ADVANCES; v. 3, n. 55, p. 3233-3236, 2018.
• Citações Web of Science: 2

Resumo

Bismuth triiodide (BiI3) is a potential candidate for application in solar cell due to its good optoelectronic properties and because it is free of toxic elements. It can be used as the absorber material in solar cells or converted into the perovskite-like material MA(3)Bi(2)I(9), suitable also for photovoltaic applications. Bismuth triiodide has been prepared by physical vapour transport (PVT) and by solution process through spin coating. In this work we present optical and structural/topological properties of BiI3 deposited by thermal evaporation under high vacuum. The films are slightly tensile, polycrystalline, homogenously distributed and with good adherence on several substrates, with an indirect bandgap of 1.81 eV, index of refraction of 3.3 (630 nm), photoluminescence centered at 1.74 eV and a Raman peak at 118cm(-1) associated with the A(g) mode. (AU)

• Processo FAPESP: 12/10127-5 - Pesquisa e desenvolvimento de materiais nanoestruturados para aplicações eletrônicas e de física de superfícies
• Beneficiário: Fernando Alvarez
• Modalidade de apoio: Auxílio à Pesquisa - Temático