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  • Công bố khoa học và công nghệ Việt Nam

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Lê Việt Cường(1), Bùi Đình Tú, Phạm Đức Thắng, Nguyễn Huy Tiệp

CẤU TRÚC TINH THỂ VÀ ĐẶC TÍNH QUANG ĐIỆN CỦA HẠT TINH THỂ PEROVSKITE LAI VÔ CƠ - HỮU CƠ KÍCH THƯỚC MICROMET

CRYSTAL STRUCTURE AND OPTOELECTRONIC PROPERTIES OF MICROSIZED SINGLE-CRYSTAL HYBRID ORGANIC-INORGANIC PEROVSKITE PARTICLES

Tạp chí Phân tích Hóa, Lý và Sinh học

2023

1

120

In this study, we characterize the crystal structure and optoelectronic properties of the hybrid organicinorganic perovskite CH3NH3PbBr3 fabricating by precursor solution-dipping on glass/FTO/PEDOT:PSS substrate. Structural analysis results reveal that the as-fabricated perovskite ismicrosized single crystal particles, belonging to the cubic crystal system in space group Pm m, with lattice parameters of a = b = c = 5.92 Å,  =  =  = 90o, V = 207.42 Å3 and having a preferred orientation of (n00) representing by the corresponding high-intensity diffraction peaks. The crystals show a relatively strong absorption with an optical energy band gap of Eg = 2.99 eV. The I - V characterization for the crystals exhibits strong current responses under excited-light irradiation. This work is proposed to offer a potential opportunity for efficient micro optoelectronic devices based on microsized CH3NH3PbBr3 single crystals

In this study, we characterize the crystal structure and optoelectronic properties of the hybrid organicinorganic perovskite CH3NH3PbBr3 fabricating by precursor solution-dipping on glass/FTO/PEDOT:PSS substrate. Structural analysis results reveal that the as-fabricated perovskite ismicrosized single crystal particles, belonging to the cubic crystal system in space group Pm m, with lattice parameters of a = b = c = 5.92 Å,  =  =  = 90o, V = 207.42 Å3 and having a preferred orientation of (n00) representing by the corresponding high-intensity diffraction peaks. The crystals show a relatively strong absorption with an optical energy band gap of Eg = 2.99 eV. The I - V characterization for the crystals exhibits strong current responses under excited-light irradiation. This work is proposed to offer a potential opportunity for efficient micro optoelectronic devices based on microsized CH3NH3PbBr3 single crystals