A novel self-powered photodiode based on solution-processed organic TPD: Alq3 active layer
Document Type
Article
Publication Date
8-15-2021
Abstract
Herein, we report a novel self-powered photodiode, which is based on all solution-processed active layer made of bulk heterojunction of TPD:Alq3. The photodiodes can be utilized for the detection of ultraviolet (UV) radiation in a self-powered mode without the need for an external power supply. The optimized photodiode with TPD:Alq3 (1:2) active layer presented a sensitivity, responsivity and detectivity of 1.76 x 103, 5.22 x 10-4 A/W and 3.11 x 1010 Jones, respectively at zero biased mode under 365 nm UV light. We proposed a new approach of utilizing impedance matching to deliver the maximum power of photodiodes to the external load. Nevertheless, with a tool of minimized impedance, one can nearly get the full functionality of the photodiode at zero biased volt, but with zero power delivery to the tool. The performance of TPD:Alq3 based photodiodes outperformed that of photodiodes reported in literature.
Keywords
Photodiode, Self-powered, Maximum power, Heterojunction, Solution-processed, TPD, Alq3
Divisions
Science
Funders
University of Jeddah, Saudi Arabia[UJ-02-017-ICGR],Islamic Development Bank under IDB Merit Scholarship Program
Publication Title
Materials Science in Semiconductor Processing
Volume
131
Publisher
Elsevier
Publisher Location
THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND