Optical wireless power transmission (OWPT) using 2-terminal single-junction solar cells or light-emitting diodes is limited because it cannot generate photovoltaic power while transmitting light signals. In this study, we determine the feasibility of using a three-terminal tandem (3TT) solar cell for OWPT with two-way optical wireless communication (OWC). Accordingly, we perform fundamental experiments on simultaneous photovoltaic power generation and electroluminescence in the 3TT solar cell, which comprises a top GaAs and bottom InGaAsP subcells. The results indicate that the top cell can be operated for electroluminescence, whereas the bottom cell can be simultaneously operated for power generation under solar or near-infrared laser irradiation. These results imply that a 3TT solar cell can be utilized as an OWPT/OWC device, particularly for small Internet of Things sensors, such as in implantable bioelectronics. In future studies, we will focus on the tradeoff between the optical communication and power generation performances.

中文翻译：

---

三端串联太阳能电池同时光伏发电和电致发光

使用二端单结太阳能电池或发光二极管的光学无线电力传输（OWPT）受到限制，因为它无法在传输光信号的同时产生光伏电力。在本研究中，我们确定了使用三端串联 (3TT) 太阳能电池进行双向光无线通信 (OWC) 的 OWPT 的可行性。因此，我们在 3TT 太阳能电池中进行同步光伏发电和电致发光的基础实验，该电池由顶部 GaAs 和底部 InGaAsP 子电池组成。结果表明，顶部电池可以进行电致发光，而底部电池可以在太阳或近红外激光照射下同时进行发电。这些结果意味着 3TT 太阳能电池可用作 OWPT/OWC 设备，特别是用于小型物联网传感器，例如植入式生物电子学中。在未来的研究中，我们将重点关注光通信和发电性能之间的权衡。