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Title: | Cavity-Enhanced Near-Infrared Organic Photodetectors Based on a Conjugated Polymer Containing [1,2,5]Selenadiazolo[3,4-c]Pyridine | Authors: | Yang, Jinjin Huang, Jun Li, Ruiming Li, Hui Sun, Bin Lin, Qianqian Wang, Ming Ma, Zaifei VANDEWAL, Koen Tang, Zheng |
Issue Date: | 2021 | Publisher: | AMER CHEMICAL SOC | Source: | CHEMISTRY OF MATERIALS, 33 (13) , p. 5147 -5155 | Abstract: | Miniaturization of spectrometers can be achieved using an array of narrowband photodetectors responsive at specific wavelengths. In this work, sensitive organic narrowband photodetectors with tunable spectral response in the near-infrared (NIR) wavelength range are demonstrated. This is achieved using a resonant optical-cavity device architecture based on a thick ZnO spacer to increase the weak NIR absorption of a low-band gap conjugated polymer containing [1,2,5]-selenadiazolo[3,4-c]pyridine. We realize spectral response full-width at half-maximum (FWHM) values down to 22 nm and achieve calculated peak specific detectivity (D*) over 10(11) Jones in these cavity-enhanced photodetectors. More importantly, we achieve continuously tuned detection wavelengths over a wide wavelength range of 660-1510 nm. This allows for a proof-of-concept demonstration of a miniaturized spectrometer for the NIR wavelength range and can resolve the NIR characteristic absorption bands of water, ethanol, and acetone. | Notes: | Huang, J; Ma, ZF; Tang, Z (corresponding author), Donghua Univ, Coll Mat Sci & Engn, Ctr Adv Low Dimens Mat, State Key Lab Modificat Chem Fibers & Polymer Mat, Shanghai 201620, Peoples R China. huangj@dhu.edu.cn; mazaifei@dhu.edu.cn; ztang@dhu.edu.cn |
Document URI: | http://hdl.handle.net/1942/34728 | ISSN: | 0897-4756 | e-ISSN: | 1520-5002 | DOI: | 10.1021/acs.chemmater.1c01196 | ISI #: | WOS:000674266000029 | Rights: | 2021 American Chemical Society | Category: | A1 | Type: | Journal Contribution | Validations: | ecoom 2022 |
Appears in Collections: | Research publications |
Files in This Item:
File | Description | Size | Format | |
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Template for Electronic Submission to ACS Journals.pdf | Peer-reviewed author version | 1.03 MB | Adobe PDF | View/Open |
acschemmater1c01196.pdf | Published version | 4.6 MB | Adobe PDF | View/Open |
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