Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/36144
Title: Miniaturized VIS-NIR Spectrometers Based on Narrowband and Tunable Transmission Cavity Organic Photodetectors with Ultrahigh Specific Detectivity above 10(14) Jones
Authors: Xing, Shen
Nikolis, Vasileios Christos
Kublitski, Jonas
Guo, Erjuan
Jia, Xiangkun
Wang, Yazhong
SPOLTORE, Donato 
VANDEWAL, Koen 
Kleemann, Hans
Benduhn, Johannes
Leo, Karl
Issue Date: 2021
Publisher: WILEY-V C H VERLAG GMBH
Source: Advanced materials (Weinheim. Print), 33 (44) , (Art N° 2102967)
Abstract: Spectroscopic photodetection plays a key role in many emerging applications such as context-aware optical sensing, wearable biometric monitoring, and biomedical imaging. Photodetectors based on organic semiconductors open many new possibilities in this field. However, ease of processing, tailorable optoelectronic properties, and sensitivity for faint light are still significant challenges. Here, the authors report a novel concept for a tunable spectral detector by combining an innovative transmission cavity structure with organic absorbers to yield narrowband organic photodetection in the wavelength range of 400-1100 nm, fabricated in a full-vacuum process. Benefiting from this strategy, one of the best performed narrowband organic photodetectors is achieved with a finely wavelength-selective photoresponse (full-width-at-half-maximum of approximate to 40 nm), ultrahigh specific detectivity above 10(14) Jones, the maximum response speed of 555 kHz, and a large dynamic range up to 168 dB. Particularly, an array of transmission cavity organic photodetectors is monolithically integrated on a small substrate to showcase a miniaturized spectrometer application, and a true proof-of-concept transmission spectrum measurement is successfully demonstrated. The excellent performance, the simple device fabrication as well as the possibility of high integration of this new concept challenge state-of-the-art low-noise silicon photodetectors and will mature the spectroscopic photodetection into technological realities.
Notes: Xing, S; Benduhn, J (corresponding author), Tech Univ Dresden, Dresden Integrated Ctr Appl Phys & Photon Mat IAP, Nothnitzer Str 61, D-01187 Dresden, Germany.; Xing, S; Benduhn, J (corresponding author), Tech Univ Dresden, Inst Appl Phys, Nothnitzer Str 61, D-01187 Dresden, Germany.
shen.xing@tu-dresden.de; johannes.benduhn@tu-dresden.de
Keywords: miniaturized spectrometers; organic photodetectors; transmission;cavities; tunable spectra; wavelength selectivity
Document URI: http://hdl.handle.net/1942/36144
ISSN: 0935-9648
e-ISSN: 1521-4095
DOI: 10.1002/adma.202102967
ISI #: WOS:000695167400001
Rights: 2021 The Authors. Advanced Materials published by Wiley-VCH GmbH. This is an open access article under the terms of the Creative Commons
Category: A1
Type: Journal Contribution
Validations: ecoom 2022
Appears in Collections:Research publications

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