个人信息Personal information
- 硕士生导师
- 教师英文名称：Wang Jena
- 教师拼音名称：Wang Li
- 出生日期：1977-12-05
- 所在单位：电子科学系
- 学历：研究生(博士)毕业
- 性别：女
- 学位：博士学位
- 职称：副教授
- 毕业院校：中国科学院固体物理研究所
- 所属院系：微电子学院
- 学科：微电子学与固体电子学
论文成果
Distinguishing wavelength using two parallelly stacking graphene/thin Si/graphene heterojunctions
发布时间：2021-06-27 点击次数：
影响因子：6.4
DOI码：10.1039/d1tc01871j
发表刊物：Journal of Materials Chemistry C
摘要：In this work, we have developed a wavelength sensor that is capable of distinguishing illumination with wavelengths ranging from ultraviolet (UV) to near infrared (NIR). The as-proposed wavelength sensor is geometrically composed of two parallelly stacking graphene (Gr)/thin Si/Gr heterojunction devices, which are identical in device structures, but can display completely different optical properties in terms of distribution of photo-absorption and photo-generation rates under various light illuminations, according to theoretical simulation. Such a discrepancy in optical properties due to a wavelength dependent absorption coefficient and the relatively thin Si wafer gives rise to completely different photocurrent evolution for varied wavelengths of illumination. The relationship between the photocurrent ratio of devices, the wavelength and intensity of incident light can be numerically described by an equation, through which the wavelength in the range from 265 to 1050 nm can be accurately determined. Notably, the average root-mean-square error of this wavelength sensor is about 2.30 nm, with a relative error as low as +/- 1.5%, which is much better than other wavelength detectors previously reported. These results suggest that the present wavelength sensor may find potential application for future optoelectronic systems.
合写作者：Ting Fang, Chao Xie, Li Wang, Di Wu, Feng-Xia Liang
第一作者：Lin-Bao Luo
通讯作者：Lin-Bao Luo, Li Wang
文献类型：Article
卷号：9
期号：28
页面范围：8855-8861
ISSN号：2050-7526
是否译文：否
发表时间：2021-07-28