Self-powered SnS x /TiO 2 photodetectors (PDs) with dual-band binary response and the applications in imaging and light-encrypted logic gates
Journal of Colloid and Interface Science, ISSN: 0021-9797, Vol: 663, Page: 336-344
2024
- 2Citations
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Example: if you select the 1-year option for an article published in 2019 and a metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019. If you select the 3-year option for the same article published in 2019 and the metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019, 2018 and 2017.
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Metrics Details
- Citations2
- Citation Indexes2
Article Description
In this work, we report the design and fabrication of self-powered binary response PDs based on II-type heterostructures consisting of SnS x nanoflakes (NFs) and rutile TiO 2 nanorod arrays (NRs). The TiO 2 NRs effectively block light with wavelengths below 400 nm from reaching SnS x. Under 385 nm light, the photoelectrons in TiO 2 recombine with holes in SnS x at the interface due to the energy band bending, resulting in a positive photocurrent. Under 410 nm light, the photoelectrons in SnS x and the photogenerated holes in TiO 2 accumulate at the interface, overcoming the interfacial potential barriers induced by the higher Fermi levels of SnS x and inducing a negative photocurrent. Based on the bipolar response, the dual-band imaging capability without external filters and the light-encrypted OR, AND, and NOT logic gates using a single device are demonstrated. This work provides a blueprint for the development of multifunctional self-powered PDs that can simplify system architecture, reduce the energy consumption, and improve accuracy for applications, such as visual systems, light-controlled logic circuits, and encrypted optical communications.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S0021979724004041; http://dx.doi.org/10.1016/j.jcis.2024.02.154; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85186324333&origin=inward; http://www.ncbi.nlm.nih.gov/pubmed/38412719; https://linkinghub.elsevier.com/retrieve/pii/S0021979724004041; https://dx.doi.org/10.1016/j.jcis.2024.02.154
Elsevier BV
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