title: In Situ Growth of 120 cm2CH3NH3PbBr3Perovskite Crystal Film on FTO Glass for Narrowband-Photodetectors.
abstract: Organometal trihalide perovskites have been attracting intense attention due to their enthralling optoelectric characteristics. Thus far, most applications focus on polycrystalline perovskite, which however, is overshadowed by single crystal perovskite with superior properties such as low trap density, high mobility, and long carrier diffusion length. In spite of the inherent advantages and significant optoelectronic applications in solar cells and photodetectors, the fabrication of large-area laminar perovskite single crystals is challenging. In this report, an ingenious space-limited inverse temperature crystallization method is first demonstrated to the in situ synthesis of 120 cm2large-area CH3NH3PbBr3crystal film on fluorine-doped tin oxide (FTO) glass. Such CH3NH3PbBr3perovskite crystal film is successfully applied to narrowband photodetectors, which enables a broad linear response range of 10-4-102mW cm-2, 3 dB cutoff frequency (f3 dB) of ≈110 kHz, and high narrow response under low bias -1 V.
authors.affiliation: MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional Materials, State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry, Sun Yat-sen University, Guangzhou, 510275, P. R. China.
authors.forename: Hua-Shang
authors.initials: HS
authors.lastname: Rao
authors.affiliation: MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional Materials, State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry, Sun Yat-sen University, Guangzhou, 510275, P. R. China.
authors.forename: Wen-Guang
authors.initials: WG
authors.lastname: Li
authors.affiliation: MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional Materials, State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry, Sun Yat-sen University, Guangzhou, 510275, P. R. China.
authors.forename: Bai-Xue
authors.initials: BX
authors.lastname: Chen
authors.affiliation: MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional Materials, State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry, Sun Yat-sen University, Guangzhou, 510275, P. R. China.
authors.forename: Dai-Bin
authors.initials: DB
authors.lastname: Kuang
authors.affiliation: MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional Materials, State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry, Sun Yat-sen University, Guangzhou, 510275, P. R. China.
authors.forename: Cheng-Yong
authors.initials: CY
authors.lastname: Su
keywords: in situ growth; inverse temperature crystallization; large-area crystal films; narrowband photodetectors; organometal trihalide perovskite