Twisted Light-Enhanced Photovoltaic Effect

Kristan Bryan Simbulan, Yi Jie Feng, Wen Hao Chang, Chun I. Lu, Ting Hua Lu*, Yann Wen Lan

*此作品的通信作者

研究成果: 雜誌貢獻期刊論文同行評審

摘要

Twisted light carries a defined orbital angular momentum (OAM) that can enhance forbidden transitions in atoms and even semiconductors. Such attributes can possibly lead to enhancements of the material's photogenerated carriers through improved absorption of incident light photons. The interaction of twisted light and photovoltaic material is, thus, worth studying as more efficient photovoltaic cells are essential these days due to the need for reliable and sustainable energy sources. Two-dimensional (2D) MoS2, with its favorable optoelectronic properties, is a good platform to investigate the effects of twisted light on the photon absorption efficiency of the interacting material. This work, therefore, used twisted light as the exciting light source onto a MoS2 photovoltaic device. We observed that while incrementing the incident light's quantized OAM at fixed optical power, there are apparent improvements in the device's open-circuit voltage (VOC) and short-circuit current (ISC), implying enhancements of the photoresponse. We attribute these enhancements to the OAM of light that has facilitated improved optical absorption efficiency in MoS2. This study proposes a way of unlocking the potentials of 2D-MoS2 and envisions the employment of light's OAM for future energy device applications.

原文英語
頁(從 - 到)14822-14829
頁數8
期刊ACS Nano
15
發行號9
DOIs
出版狀態已發佈 - 2021 九月 28

ASJC Scopus subject areas

  • 材料科學(全部)
  • 工程 (全部)
  • 物理與天文學 (全部)

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