Flexible and Semitransparent Organolead Triiodide Perovskite Network Photodetector Arrays with High Stability

• DOI: 10.1021/acs.nanolett.5b03061
• Publication Date: 2015-11-03T20:47:28Z
• Authors: Hui Deng; Xiaokun Yang; Dongdong Dong; Bing Li; Dun Yang; Shengjie Yuan; Keke Qiao; Yi-Bing Cheng; Jiang Tang; Haisheng Song
• Keywords: Triiodide

Organolead triiodide perovskite (CH3NH3PbI3) as a light-sensitive material has attracted extensive attention in optoelectronics. The reported photodetectors (PDs) mainly focus on the individual, which limits their spatial imaging applications. Uniform networks combining transparency and device performance were synthesized poly(ethylene terephthalate) (PET) by controlling crystallization. Photodetector arrays based above network fabricated to demonstrate potential for image mapping. trade-off between PD was systematically investigated optimal obtained from 30 wt % precursor concentration. switching ratio, normalized detectivity, equivalent dark current derived shot noise critical parameters of reached 300, 1.02 × 10(12) Jones, 4.73 10(-15)A Hz(-1/2), respectively. Furthermore, could clearly detect light intensity distribution, thus demonstrating its preliminary function. PET substrates also conduct superior flexibility under wide angle large number bending. For common problem optoelectronics stability, sheathed with hydrophobic polymers greatly enhanced stability due improved interface contacts, surface passivation, moisture isolation. Taking into consideration transparency, flexibility, present expected be widely applied visualized portable optoelectronic system.