Bias-Modulated High Photoelectric Response of Graphene-Nanocrystallite Embedded Carbon Film Coated on n-Silicon
Bias-Modulated High Photoelectric Response of Graphene-Nanocrystallite Embedded Carbon Film Coated on n-Silicon
复制标题
n-硅上涂覆石墨烯-纳米微晶嵌入碳膜的偏置调制高光电响应
DOI:
10.3390/nano9030327
复制
发表时间:
2019-03
期刊:
影响因子:
5.3
通讯作者:
Dongfeng Diao
中科院分区:
文献类型:
--
作者:
Xi Zhang;Zezhou Lin;Da Peng;Dongfeng Diao
We propose that bias-modulated graphene-nanocrystallites (GNs) grown vertically can enhance the photoelectric property of carbon film coated on n-Si substrate. In this work, GN-embedded carbon (GNEC) films were deposited by the electron cyclotron resonance (ECR) sputtering technique. Under a reverse diode bias which lifts the Dirac point of GNs to a higher value, the GNEC film/n-Si device achieved a high photocurrent responsivity of 0.35 A/W. The bias-modulated position of the Dirac point resulted in a tunable ON/OFF ratio and a variable spectral response peak. Moreover, due to the standing structured GNs keeping the transport channels, a response time of 2.2 μs was achieved. This work sheds light on the bias-control wavelength-sensitive photodetector applications.
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DOI:
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