Environment-friendly antisolvent tert-amyl alcohol modified hybrid perovskite photodetector with high responsivity  

作　　者：TENGTENG LI QINGYAN LI XIN TANG ZHILIANG CHEN YIFAN LI HONGLIANG ZHAO SILEI WANG XIN DING YATING ZHANG JIANQUAN YAO 

机构地区：[1]Key Laboratory of Opto-Electronics Information Technology,Ministry of Education,School of Precision Instruments and Opto-Electronics Engineering,Tianjin University,Tianjin 300072,China

出　　处：《Photonics Research》2021年第5期781-791,共11页光子学研究（英文版）

基　　金：National Natural Science Foundation of China(61675147,61735010,91838301);National Key Research and Development Program of China(2017YFA0700202);Department of Education of Guangdong Province(2018KQNCX264);Basic Research Program of Shenzhen(JCYJ20170412154447469);Beiyang Yong Junior Faculties of Tianjin University(2019XRG-0056);Wenzhou City Governmental Public Industrial Technology Project(G20160014)。

摘　　要：The preparation of high-quality perovskite films with optimal morphologies is important for achieving highperformance perovskite photodetectors(PPDs). An effective strategy to optimize the morphologies is to add antisolvents during the spin-coating steps. In this work, a novel environment-friendly antisolvent tert-amyl alcohol(TAA) is employed first to improve the quality of perovskite films, which can effectively regulate the formation of an intermediate phase staged in between a liquid precursor phase and a solid perovskite phase due to its moderate polarity and further promote the homogeneous nucleation and crystal growth, thus leading to the formation of high-quality perovskite films and enhanced photodetector performance. As a result, the responsivity of the PPD reaches 1.56 A/W under the illumination of 532 nm laser with the power density of 6.37 μW=cm^(2) at a bias voltage of -2 V, which is good responsivity for PPDs with the vertical structure and only CH_(3)NH_(3)PbI_(3) perovskite as the photosensitive material. The corresponding detectivity reaches 1.47×10^(12) Jones, while the linear dynamic range reaches 110 dB. These results demonstrate that our developed green antisolvent TAA has remarkable advantages for the fabrication of high-performance PPDs and can provide a reference for similar research work.

关 键 词：PEROVSKITE HIGH illumination 

分 类 号：TB383.2[一般工业技术—材料科学与工程] TN15[电子电信—物理电子学]