Pt/AlGaN Nanoarchitecture: Toward High Responsivity, Self-Powered Ultraviolet-Sensitive Photodetection
Type
ArticleAuthors
Wang, DanhaoLiu, Xin
Fang, Shi
Huang, Chen
Kang, Yang
Yu, Huabin
Liu, Zhongling
Zhang, Haochen
Long, Ran
Xiong, Yujie

Lin, Yangjian
Yue, Yang
Ge, Binghui
Ng, Tien Khee

Ooi, Boon S.

Mi, Zetian

He, Jr-Hau

Sun, Haiding

KAUST Department
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) DivisionElectrical Engineering Program
Date
2020-12-15Embargo End Date
2021-12-15Submitted Date
2020-08-19Permanent link to this record
http://hdl.handle.net/10754/666512
Metadata
Show full item recordAbstract
Energy-saving photodetectors are the key components in future photonic systems. Particularly, self-powered photoelectrochemical-type photodetectors (PEC–PDs), which depart completely from the classical solid-state junction device, have lately intrigued intensive interest to meet next-generation power-independent and environment-sensitive photodetection. Herein, we construct, for the first time, solar-blind PEC PDs based on self-assembled AlGaN nanostructures on silicon. Importantly, with the proper surface platinum (Pt) decoration, a significant boost of photon responsivity by more than an order of magnitude was achieved in the newly built Pt/AlGaN nanoarchitectures, demonstrating strikingly high responsivity of 45 mA/W and record fast response/recovery time of 47/20 ms without external power source. Such high solar-blind photodetection originates from the unparalleled material quality, fast interfacial kinetics, as well as high carrier separation efficiency which suggests that embracement of defect-free wide-bandgap semiconductor nanostructures with appropriate surface decoration offers an unprecedented opportunity for designing future energy-efficient and large-scale optoelectronic systems on a silicon platform.Citation
Wang, D., Liu, X., Fang, S., Huang, C., Kang, Y., Yu, H., … Sun, H. (2020). Pt/AlGaN Nanoarchitecture: Toward High Responsivity, Self-Powered Ultraviolet-Sensitive Photodetection. Nano Letters. doi:10.1021/acs.nanolett.0c03357Sponsors
This work was funded by National Natural Science Foundation of China (Grant 61905236), the Fundamental Research Funds for the Central Universities (Grant WK2100230020), and USTC Research Funds of the Double First-Class Initiative (Grant YD3480002002) and was partially carried out at the USTC Center for Micro and Nanoscale Research and Fabrication.Publisher
American Chemical Society (ACS)Journal
Nano LettersAdditional Links
https://pubs.acs.org/doi/10.1021/acs.nanolett.0c03357ae974a485f413a2113503eed53cd6c53
10.1021/acs.nanolett.0c03357