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

Publication Title

Materials Science in Semiconductor Processing

Divisions

Science

Funders

University of Jeddah, Saudi Arabia[UJ-02-017-ICGR],Islamic Development Bank under IDB Merit Scholarship Program

Volume

131

Publisher

Elsevier

Publisher Location

THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND

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