Ultrahigh responsivity and detectivity graphene-perovskite hybrid phototransistors by sequential vapor deposition
Journal
Scientific Reports
Journal Volume
7
Journal Issue
462811
Pages
1-10
Date Issued
2017
Author(s)
Chang, P.-H.
Liu, S.-Y.
Lan, Y.-B.
Tsai, Y.-C.
You, X.-Q.
Li, C.-S.
Huang, K.-Y.
Chou, A.-S.
Cheng, T.-C.
Abstract
% in the visible range (450-700 nm). This excellent performance is attributed to the ultra-flat perovskite films grown by vapor deposition on the graphene sheets. The hybrid structure of graphene covered with uniform perovskite has high exciton separation ability under light exposure, and thus efficiently generates photocurrents. This paper presents photoluminescence (PL) images along with statistical analysis used to study the photo-induced exciton behavior. Both uniform and dramatic PL intensity quenching has been observed over entire measured regions, consistently demonstrating excellent exciton separation in the devices.
SDGs
Publisher
Nature Publishing Group
Type
journal article