A MoSe2/WSe2 Heterojunction-Based Photodetector at Telecommunication Wavelengths

Hui Xue*, Yadong Wang, Yunyun Dai, Wonjae Kim, Henri Jussila, Mei Qi, Jannatul Susoma, Zhaoyu Ren, Qing Dai, Jianlin Zhao, Kari Halonen, Harri Lipsanen, Xiaomu Wang, Xuetao Gan, Zhipei Sun

*Tämän työn vastaava kirjoittaja

Tutkimustuotos: LehtiartikkeliArticleScientificvertaisarvioitu

67 Sitaatiot (Scopus)
283 Lataukset (Pure)

Abstrakti

van der Waals (vdW) heterojunctions enable arbitrary combinations of different layered semiconductors with unique band structures, offering distinctive band engineering for photonic and optoelectronic devices with new functionalities and superior performance. Here, an interlayer photoresponse of a few-layer MoSe2/WSe2 vdW heterojunction is reported. With proper electrical gating and bias, the heterojunction exhibits high-sensitivity photodetection with the operation wavelength extended up to the telecommunication band (i.e. 1550 nm). The photoresponsivity and normalized photocurrent-to-dark current ratio reach up to 127 mA W−1 and 1.9 × 104 mW−1, respectively. The results not only provide a promising solution to realize high-performance vdW telecommunication band photodetectors, but also pave the way for using sub-bandgap engineering of two-dimensional layered materials for photonic and optoelectronic applications.

AlkuperäiskieliEnglanti
Artikkeli1804388
JulkaisuAdvanced Functional Materials
Vuosikerta28
Numero47
Varhainen verkossa julkaisun päivämäärä1 tammik. 2018
DOI - pysyväislinkit
TilaJulkaistu - 21 marrask. 2018
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

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