Demonstration of a Broadband Photodetector Based on a Two-Dimensional Metal–Organic Framework
Arora H, Dong R, Venanzi T, Zscharschuch J, Schneider H, Helm M, Feng X, Canovas E, Erbe A (2020)
Publication Type: Journal article
Publication year: 2020
Journal
Book Volume: 32
Article Number: 1907063
Journal Issue: 9
DOI: 10.1002/adma.201907063
Abstract
Metal–organic frameworks (MOFs) are emerging as an appealing class of highly tailorable electrically conducting materials with potential applications in optoelectronics. Yet, the realization of their proof-of-concept devices remains a daunting challenge, attributed to their poor electrical properties. Following recent work on a semiconducting Fe3(THT)2(NH4)3 (THT: 2,3,6,7,10,11-triphenylenehexathiol) 2D MOF with record-high mobility and band-like charge transport, here, an Fe3(THT)2(NH4)3 MOF-based photodetector operating in photoconductive mode capable of detecting a broad wavelength range from UV to NIR (400–1575 nm) is demonstrated. The narrow IR bandgap of the active layer (≈0.45 eV) constrains the performance of the photodetector at room temperature by band-to-band thermal excitation of charge carriers. At 77 K, the device performance is significantly improved; two orders of magnitude higher voltage responsivity, lower noise equivalent power, and higher specific detectivity of 7 × 108 cm Hz1/2 W−1 are achieved under 785 nm excitation. These figures of merit are retained over the analyzed spectral region (400–1575 nm) and are commensurate to those obtained with the first demonstrations of graphene- and black-phosphorus-based photodetectors. This work demonstrates the feasibility of integrating conjugated MOFs as an active element into broadband photodetectors, thus bridging the gap between materials' synthesis and technological applications.
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How to cite
APA:
Arora, H., Dong, R., Venanzi, T., Zscharschuch, J., Schneider, H., Helm, M.,... Erbe, A. (2020). Demonstration of a Broadband Photodetector Based on a Two-Dimensional Metal–Organic Framework. Advanced Materials, 32(9). https://doi.org/10.1002/adma.201907063
MLA:
Arora, Himani, et al. "Demonstration of a Broadband Photodetector Based on a Two-Dimensional Metal–Organic Framework." Advanced Materials 32.9 (2020).
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