The DOI matches its Crossref record; 32 of the 32 references it cites were found in a registry or an index.
Self‐Powered Si/CdS Flexible Photodetector with Broadband Response from 325 to 1550 nm Based on Pyro‐phototronic Effect: An Approach for Photosensing below Bandgap Energy
Abstract
Cadmium sulfide (CdS) has received widespread attention as the building block of optoelectronic devices due to its extraordinary optoelectronic properties, low work function, and excellent thermal and chemical stability. Here, a self‐powered flexible photodetector (PD) based on p‐Si/n‐CdS nanowires heterostructure is fabricated. By introducing the pyro‐phototronic effect derived from wurtzite structured CdS, the self‐powered PD shows a broadband response range, even beyond the bandgap limitation, from UV (325 nm) to near infrared (1550 nm) under zero bias with fast response speed. The light‐induced pyroelectric potential is utilized to modulate the optoelectronic processes and thus improve the photoresponse performance. Lasers with different wavelengths have different effects on the self‐powered PDs and corresponding working mechanisms are carefully investigated. Upon 325 nm laser illumination, the rise time and fall time of the self‐powered PD are 245 and 277 µs, respectively, which are faster than those of most previously reported CdS‐based nanostructure PDs. Meanwhile, the photoresponsivity R and specific detectivity D* regarding to the relative peak‐to‐peak current are both enhanced by 67.8 times, compared with those only based on the photovoltaic effect‐induced photocurrent. The self‐powered flexible PD with fast speed, stable, and broadband response is expected to have extensive applications in various environments.
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Cites
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Ultrasensitive and Broadband MoS2 Photodetector Driven by Ferroelectrics
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Self-citationOrganic Photodiodes: The Future of Full Color Detection and Image Sensing
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Cited by
Wu, J., Zhang, X., Wang, Z., Liang, L., Niu, X., Guan, Q., You, S., & Luo, J. (2023) · Materials Horizons · doi:10.1039/d2mh01287a · Cited by 26
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Metadata
- Authors
- Dai, Y., Wang, X., Peng, W., Xu, C., Wu, C., Dong, K., Liu, R., & Wang, Z. L.
- Venue
- Advanced Materials
- Publisher
- Wiley
- Published
- 2018-01-15
- Volume
- 30
- Issue
- 9
- ISSN
- 0935-9648 (ISSN-L)
- 1521-4095
- OpenAlex
- W2782704995
- Cited by
- 282
- References
- 32
- FWCI
- 7.23
- Type
- journal article
- Language
- en
- Open access
- closed
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- Dai, Y., Wang, X., Peng, W., Xu, C., Wu, C., Dong, K., Liu, R., & Wang, Z. L. (2018). Self‐Powered Si/CdS Flexible Photodetector with Broadband Response from 325 to 1550 nm Based on Pyro‐phototronic Effect: An Approach for Photosensing below Bandgap Energy. Advanced Materials. https://doi.org/10.1002/adma.201705893
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