Octupole moment driven free charge generation in partially chlorinated subphthalocyanine for planar heterojunction organic photodetectors

Aniket Rana, Song Yi Park, Chiara Labanti, Feifei Fang, Sungyoung Yun, Yifan Dong, Emily J. Yang, Davide Nodari, Nicola Gasparini, Jeong–Il Park, Jisoo Shin, Daiki Minami, Kyung-Bae Park (), Ji-Seon Kim () and James R. Durrant ()
Additional contact information
Aniket Rana: Imperial College London
Song Yi Park: Imperial College London
Chiara Labanti: Imperial College London
Feifei Fang: Samsung Electronics Co. Ltd., Samsung-ro, Yeongtong-gu
Sungyoung Yun: Samsung Electronics Co. Ltd., Samsung-ro, Yeongtong-gu
Yifan Dong: Imperial College London
Emily J. Yang: Imperial College London
Davide Nodari: Imperial College London
Nicola Gasparini: Imperial College London
Jeong–Il Park: Samsung Electronics Co. Ltd., Samsung-ro, Yeongtong-gu
Jisoo Shin: Samsung Electronics Co. Ltd., Samsung-ro, Yeongtong-gu
Daiki Minami: Samsung Electronics Co. Ltd.
Kyung-Bae Park: Samsung Electronics Co. Ltd., Samsung-ro, Yeongtong-gu
Ji-Seon Kim: Imperial College London
James R. Durrant: Imperial College London

Nature Communications, 2024, vol. 15, issue 1, 1-10

Abstract: Abstract In this study, high-performance organic photodetectors are presented which utilize a pristine chlorinated subphthalocyanine photoactive layer. Optical and optoelectronic analyses indicate that the device photocurrent is primarily generated through direct charge generation within the chlorinated subphthalocyanine layer, rather than exciton separation at layer interfaces. Molecular modelling suggests that this direct charge generation is facilitated by chlorinated subphthalocyanine high octupole moment (−80 DÅ2), which generates a 200 meV shift in molecular energetics. Increasing the thickness of chlorinated subphthalocyanine leads to faster response time, correlated with a decrease in trap density. Notably, photodetectors with a 50 nm thick chlorinated subphthalocyanine photoactive layer exhibit detectivities approaching 1013 Jones, with a dark current below 10−7 A cm−2 up to −5 V. Based on these findings, we conclude that high octupole moment molecular semiconductors are promising materials for high-performance organic photodetectors employing single-component photoactive layer.

Date: 2024
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.nature.com/articles/s41467-024-49169-1 Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-49169-1

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/s41467-024-49169-1

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().