https://scholars.lib.ntu.edu.tw/handle/123456789/598343
標題: | Photoelectric effect of hybrid ultraviolet-sensitized phototransistors from an n-type organic semiconductor and an all-inorganic perovskite quantum dot photosensitizer | 作者: | Hong S.-H Afraj S.N Huang P.-Y Yeh Y.-Z SHIH-HUANG TUNG Chen M.-C CHENG-LIANG LIU |
關鍵字: | Bromine compounds;Heterojunctions;Lead compounds;Light absorption;Nanocrystals;Perovskite;Photodetectors;Photoelectricity;Photosensitizers;Phototransistors;Absorption capability;Inorganics;Low dimensional;N-type organic semiconductor;Photo detection;Photosensitiser;Semiconductor transport;Sensing material;Solution-processed;Tunabilities;Semiconductor quantum dots | 公開日期: | 2021 | 卷: | 13 | 期: | 48 | 起(迄)頁: | 20498-20507 | 來源出版物: | Nanoscale | 摘要: | Low-dimensional all-inorganic perovskite quantum dots (QDs) have been increasingly developed as photo-sensing materials in the field of photodetectors because of their strong light-absorption capability and broad bandgap tunability. Here, solution-processed hybrid phototransistors built by a dithienothiophenoquinoid (DTTQ) n-type organic semiconductor transport channel mixing with a colloidal CsPbBr3 perovskite QD photosensitizer are demonstrated by manipulating the relative volume ratio from 10 : 0 to 9 : 1, 7 : 3, 5 : 5, 3 : 7, 1 : 9, and 0 : 10. This results in a significantly enhanced photodetection performance owing to the advantages of a high UV absorption cross-section based on the perovskite QDs, efficient carrier transport abilities from the DTTQ semiconductor, and the photogating effect between the bulk heterojunction photocarrier transfer interfaces. The optimized DTTQ : QD (3 : 7) hybrid phototransistor achieves a high photoresponsivity (R) of 7.1 × 105 A W-1, a photosensitivity (S) of 1.8 × 104, and a photodetectivity (D) of 3.6 × 1013 Jones at 365 nm. Such a solution-based fabrication process using a hybrid approach directly integrated into a sensitized phototransistor potentially holds promising photoelectric applications towards advanced light-stimulated photodetection. ? 2021 The Royal Society of Chemistry. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85121671966&doi=10.1039%2fd1nr07084c&partnerID=40&md5=ffd954186eb4cf35d110bbc79f79d526 https://scholars.lib.ntu.edu.tw/handle/123456789/598343 |
ISSN: | 20403364 | DOI: | 10.1039/d1nr07084c |
顯示於: | 材料科學與工程學系 |
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