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

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Citations (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.

Original languageEnglish
Pages (from-to)9297-9303
Number of pages7
JournalACS Nano
Issue number6
Publication statusPublished - 2022 Jun 28


  • orbital angular momentum
  • photoconductive effects
  • photogain
  • photogating
  • silicon nanowires
  • twisted light

ASJC Scopus subject areas

  • General Materials Science
  • General Engineering
  • General Physics and Astronomy


Dive into the research topics of 'Twisted Light-Induced Photocurrent in a Silicon Nanowire Field-Effect Transistor'. Together they form a unique fingerprint.

Cite this