Effects of co-doping on electronic structure and optical properties of 3C-SiC from first-principles method

Lu, Xuefeng; Zhao, Tingting; Lei, Qingfeng; Yan, Xiaobin; Ren, Junqiang; La, Peiqing

doi:10.1016/j.commatsci.2019.109172

Cited by 6 publications

(1 citation statement)

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“…The increase in the I on with a decrease in the UV wavelength can be explained through the transmittance and the absorption coefficient of the 3C-SiC [37]. The absorption coefficient of the 3C-SiC peaks in the deep UV region (100-200 nm) [38]. As the wavelength of the incident light increases, the transmittance of the 3C-SiC layer increases rapidly and slows down near the visible range (∼400 nm) [39].…”

Section: Resultsmentioning

confidence: 99%

3C-SiC/Si heterostructure for self-powered multiband (UV-VIS) photodetection applications

Tamay¹,

Teker²

2022

Phys. Scr.

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This study reports a self-powered 3C-SiC/Si heterostructure photodetector in both metal-semiconductor-metal (MSM) and heterojunction (HET) configurations and capable of operating under ultraviolet and visible light (UV-VIS). The single crystalline 3C-SiC thin film was grown epitaxially on a Si (111) substrate by employing a two-step growth process. MSM configuration exhibited a peak responsivity of 0.334 A/W and a specific detectivity of 5.4 x 1011 cm.Hz1/2.W-1 (Jones) under white light illumination. However, in the UV region, photocurrent showed an increasing behavior with a decrease in the UV wavelength from 365 nm to 254 nm. The peak responsivity and specific detectivity values of the HET configuration were also determined under white light illumination with 0.167 A/W and 4.4 x 1011 Jones, respectively. Furthermore, both devices exhibited very fast rise and decay times as 3.8 ms and 3.6 ms for the MSM, and 6 ms and 8 ms for the HET configuration (fastest reported on 3C-SiC). In brief, our self-powered 3C-SiC/Si heterostructure with multiband (UV-VIS) photodetection sensitivity and fast speed could offer new solutions for the eco-friendly and sustainable optoelectronic applications.

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Section: Resultsmentioning

confidence: 99%