Zhan Yan, Wang Yang, Cheng Qunfeng, Li Chang, Li Kaixuan, Li Huizeng, Peng Jingsong, Lu Bo, Wang Yu, Song Yanlin, Jiang Lei, Li Mingzhu
Key Laboratory of Bio-inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry, Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing, 100191, P. R. China.
Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100191, P. R. China.
Angew Chem Int Ed Engl. 2019 Nov 11;58(46):16456-16462. doi: 10.1002/anie.201908743. Epub 2019 Sep 5.
Extensive applications for photodetectors have led to demand for high-responsivity polarization-sensitive light detection. Inspired by the elaborate architecture of butterfly Papilio paris, a 1D nanograting bonded porous 2D photonic crystal perovskite photodetector (G-PC-PD) using a commercial DVD master and 2D crystalline colloidal arrays template was fabricated. The coupling effect from grating diffraction and reflection of the PC stopband renders the enhanced light harvesting of G-PC-PD. The porous scaffold and nanoimprinting process afford a highly crystalline perovskite film. White light responsivity and detectivity of G-PC-PD are up to 12.67 A W and 3.22×10 Jones (6∼7 times that of a pristine perovskite photodetector). The highly ordered nanograting arrays of G-PC-PD enable polarization-sensitive light detection with a rate of -0.72 nA deg . This hierarchical perovskite integrated nanograting and 2D PC architecture opens a new avenue to high-performance optoelectronic devices.
光电探测器的广泛应用引发了对高响应度偏振敏感光探测的需求。受巴黎翠凤蝶精细结构的启发，利用商用DVD母盘和二维晶体胶体阵列模板制备了一种一维纳米光栅键合多孔二维光子晶体钙钛矿光电探测器（G-PC-PD）。光栅衍射和光子晶体禁带反射的耦合效应使得G-PC-PD的光捕获能力增强。多孔支架和纳米压印工艺造就了高度结晶的钙钛矿薄膜。G-PC-PD的白光响应度和探测率分别高达12.67 A W和3.22×10 Jones（是原始钙钛矿光电探测器的6至7倍）。G-PC-PD高度有序的纳米光栅阵列实现了偏振敏感光探测，偏振率为-0.72 nA deg 。这种分级钙钛矿集成纳米光栅和二维光子晶体结构为高性能光电器件开辟了一条新途径。
