Jiang Yuan, Liu Pengzhan, Wang Yongjin
Grünberg Research Centre, Nanjing University of Posts and Telecommunications, Nanjing 210003, China.
ACS Omega. 2022 Apr 15;7(16):14017-14021. doi: 10.1021/acsomega.2c00562. eCollection 2022 Apr 26.
The demand for on-chip multifunctional optoelectronic systems is increasing in the Internet-of-Things era. Spectral emission-detection overlap endows an InGaN/GaN quantum well diode (QWD) with an intriguing capability to detect and modulate light emitted by itself, which is of great interest when merging electronics and photonics together on a single chip for the development of advanced information systems. When biased and illuminated at approximately the same time, the InGaN/GaN QWD can achieve light emission and detection simultaneously. Herein, we experimentally demonstrate the simultaneous emission-detection phenomenon and analyze the irreversibility of spectral emission-detection overlap according to energy diagram theory, which may answer why the QWD can only detect and modulate higher-energy photons than those emitted by itself.
在物联网时代，对片上多功能光电子系统的需求不断增加。光谱发射 - 检测重叠赋予了氮化铟镓/氮化镓量子阱二极管（QWD）一种有趣的能力，即能够检测和调制其自身发射的光，当在单个芯片上融合电子学和光子学以开发先进信息系统时，这一特性极具吸引力。当在大致相同的时间施加偏置并进行光照时，氮化铟镓/氮化镓量子阱二极管可以同时实现发光和检测。在此，我们通过实验证明了同时发射 - 检测现象，并根据能量图理论分析了光谱发射 - 检测重叠的不可逆性，这可能解释了为什么量子阱二极管只能检测和调制比其自身发射的光子能量更高的光子。
