基于锡铅混合钙钛矿的超快自驱动近红外光电探测器与成像阵列

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Abstract：Tin-lead（Sn-Pb）mixed perovskites areextensively investigated innear-infrared（NIR）photodetectors （PDs）owing to their excelent photoelectric performance.However，achieving high-performance Sn-Pb mixed PDs remains challenging，primarily because the rapid crystalization the susceptibility Sn2+ to oxidation. To address these issues，this study introduces the multifunctional molecules 2，3 -difluorobenzenamine（DBM）tomodulate the crystallization Sn-Pb mixed perovskites retard the oxidation Sn 2+ ，thereby significantly enhancing film quality.Compared with the pristine film，Sn-Pb mixed perovskite films modulated by DBM molecules exhibita highlyhomogeneous morphology，reduced roughness defect density.Theself-powered NIRPDs fabricated with the improved films have a spectral response range from 30O nm to110O nm，a peak responsivity 0.51A⋅W-1 ，aspecific detectivity as high as 2. 46×1011 Jones within the NIR region（780 nm to 1 100nm ），a linear dynamic range exceeding152dB， ultrafast rise/falltime123/464ns.Thanks to theoutsting performancePDs，the fabricated 5×5 PDs array demonstrates superior imaging ability in the NIR region up to 98O nm. This work advances the development Sn-Pb mixed perovskites for NIR detection paves the way for their commercialization.

Words：tin-ladmixedperovskites；near-infraredphotodetectors；imagingaray；oxidation；crystallzationmodulation

CLCnumber：O482.31 Document code：A

DOI：10.37188/CJL.20250027 CSTR：32170.14.CJL.20250027

摘要：锡铅（Sn-Pb）混合钙钛矿因其卓越的光电特性，在近红外光电探测器领域得以快速发展。（剩余29222字）