Twisted Light-Induced Photocurrent in a Silicon Nanowire Field-Effect Transistor

Yi Jie Feng, Kristan Bryan Simbulan, Tilo H. Yang, Ye Ru Chen, Kai Shin Li, Chia Jung Chu, Ting Hua Lu*, Yann Wen Lan


研究成果: 雜誌貢獻期刊論文同行評審

2 引文 斯高帕斯(Scopus)


Light can possess orbital angular momentum (OAM), in addition to spin angular momentum (SAM), which offers nearly infinite possible values of momentum states, allowing a wider degree of freedom for information processing and communications. The OAM of light induces a selection rule that obeys the law of conservation of angular momentum as it interacts with a material, affecting the material's optical and electrical properties. In this work, silicon nanowire field-effect transistors are subjected to light with OAM, also known as twisted light. Electrical measurements on the devices consequently reveal photocurrent enhancements after incrementing the OAM of the incident light from 0â., (fundamental mode) to 5â., . Such a phenomenon is attributed to the enhancements of the photogating and the photoconductive effects under the influence of the OAM of light, the underlying mechanism of which is proposed and discussed using energy band diagrams. With these observations, a strategy for controlling photocurrent has been introduced, which can be a realization of the application in the field of optoelectronics technology.

頁(從 - 到)9297-9303
期刊ACS Nano
出版狀態已發佈 - 2022 6月 28

ASJC Scopus subject areas

  • 一般材料科學
  • 一般工程
  • 一般物理與天文學


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