文献类型：期刊文献

英文题名：An Electrically Modulated Single-Color/Dual-Color Imaging Photodetector

作者：Li, Lin Chen, Hongyu Fang, Zhimin Meng, Xianyi Zuo, Chuantian Lv, Menglan Tian, Yongzhi Fang, Ying Xiao, Zuo Shan, Chongxin Xiao, Zhengguo Jin, Zhiwen Shen, Guozhen Shen, Liang Ding, Liming

第一作者：Li, Lin

通信作者：Ding, LM[1];Jin, ZW[2];Shen, GZ[3];Shen, L[4]

机构：[1]Harbin Normal Univ, Key Lab Photon & Elect Bandgap Mat, Minist Educ, Sch Phys & Elect Engn, Harbin 150025, Peoples R China;[2]Natl Ctr Nanosci & Technol, Key Lab Nanosyst & Hierarch Fabricat CAS, Ctr Excellence Nanosci CAS, Beijing 100190, Peoples R China;[3]Harbin Inst Technol, Dept Phys, Harbin 150080, Peoples R China;[4]CSIRO Mfg, Bag 10, Clayton, Vic 3169, Australia;[5]Guizhou Inst Technol, Sch Chem Engn, Guiyang 550003, Peoples R China;[6]Zhengzhou Univ, Sch Phys & Engn, Zhengzhou 450001, Peoples R China;[7]Univ Sci & Technol China, Dept Phys, Key Lab Strongly Coupled Quantum Matter Phys CAS, Hefei 230026, Peoples R China;[8]Lanzhou Univ, Sch Phys Sci & Technol, Lanzhou 730000, Peoples R China;[9]Chinese Acad Sci, Inst Semicond, State Key Lab Superlattice & Microstruct, Beijing 100083, Peoples R China;[10]Jilin Univ, Coll Elect Sci & Engn, State Key Lab Integrated Optoelect, Changchun 130012, Peoples R China

第一机构：Harbin Normal Univ, Key Lab Photon & Elect Bandgap Mat, Minist Educ, Sch Phys & Elect Engn, Harbin 150025, Peoples R China

通信机构：corresponding author), Natl Ctr Nanosci & Technol, Key Lab Nanosyst & Hierarch Fabricat CAS, Ctr Excellence Nanosci CAS, Beijing 100190, Peoples R China;corresponding author), Lanzhou Univ, Sch Phys Sci & Technol, Lanzhou 730000, Peoples R China;corresponding author), Chinese Acad Sci, Inst Semicond, State Key Lab Superlattice & Microstruct, Beijing 100083, Peoples R China;corresponding author), Jilin Univ, Coll Elect Sci & Engn, State Key Lab Integrated Optoelect, Changchun 130012, Peoples R China.

年份：2020

卷号：32

期号：24

外文期刊名：ADVANCED MATERIALS

收录：;EI(收录号：20202108693010);Scopus(收录号：2-s2.0-85085084904);WOS:【SCI-EXPANDED(收录号:WOS:000531270900001)】；

基金：The authors thank the National Natural Science Foundation of China (Nos. 51773045, 21772030, 51922032, 21961160720, 61404039, 61875072, and 61874037) and the National Key Research and Development Program of China (no. 2017YFA0206600) for financial support. They also thank Yiran Zhao (Zolix) for his kind help in measuring transient photoresponse.

语种：英文

外文关键词：dual-color imaging; organic; perovskite photodetectors; response speed

摘要：An electrically modulated single-/dual-color imaging photodetector with fast response speed is developed based on a small molecule (CO(i)8DFIC)/perovskite (CH3NH3PbBr3) hybrid film. Owing to the type-I heterojunction, the device can facilely transform dual-color images to single-color images by applying a small bias voltage. The photodetector exhibits two distinct cut-off wavelengths at approximate to 544 nm (visible region) and approximate to 920 nm (near-infrared region), respectively, without any power supply. Its two peak responsivities are 0.16 A W-1 at approximate to 525 nm and 0.041 A W-1 at approximate to 860 nm with a fast response speed (approximate to 10(2) ns). Under 0.6 V bias, the photodetector can operate in a single-color mode with a peak responsivity of 0.09 A W-1 at approximate to 475 nm, showing a fast response speed (approximate to 10(2) ns). A physical model based on band energy theory is developed to illustrate the origin of the tunable single-/dual-color photodetection. This work will stimulate new approaches for developing solution-processed multifunctional photodetectors for imaging photodetection in complex circumstances.