High Responsivity and Wavelength Selectivity of GaN‐Based Resonant Cavity Photodiodes
Li, Jing; Yang, Chao; Liu, Lei; Cao, Haicheng; Lin, Shan; Xi, Xin; Li, Xiaodong; Ma, Zhanhong; Wang, Kaiyou; Patanè, Amalia; Zhao, Lixia
The implementation of blue-light photodiodes based on InGaN in emerging technologies, such as free-space visible light communication (VLC), requires transformative approaches towards enhanced performance, miniaturization, and integration beyond current Si-based technologies. Here, we report on the design and realization of high-performance InGaN-based resonant cavity photodiodes with high-reflectivity lateral porous GaN distributed Bragg reflectors. The well-controlled porosification of GaN on the 2-inch wafers enables us to design and fabricate optical components, unlocking the potential of nitride semiconductors for several applications. These resonant-cavity-enhanced photodiodes, which have a 12 nm-thick optically active region, exhibit a high responsivity (~0.1 A W-1) to blue-light even without any externally applied voltage. Furthermore, the device can operate as both an emitter and a detector of visible 2 light at well-defined wavelengths with spectral overlap between the electroluminescence emission and photocurrent responsivity, meeting the requirement of wavelength selectivity, thermal stability and low-power consumption for VLC, with potential for integration of different functionalities, i.e. light emission and detection, on a single chip without additional light filters.
|Journal Article Type||Article|
|Publication Date||Feb 17, 2020|
|Journal||Advanced Optical Materials|
|Peer Reviewed||Peer Reviewed|
|APA6 Citation||Li, J., Yang, C., Liu, L., Cao, H., Lin, S., Xi, X., …Zhao, L. (2020). High Responsivity and Wavelength Selectivity of GaN‐Based Resonant Cavity Photodiodes. Advanced Optical Materials, https://doi.org/10.1002/adom.201901276|
|Keywords||lateral porous GaN distributed Bragg reflectors; resonant cavity; high responsivity; high wavelength selectivity; Indium Gallium Nitride|
|Additional Information||Received: 2019-07-26; Published: 2020-02-17|
This file is under embargo until Feb 18, 2021 due to copyright restrictions.
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