Design and Construction of an Optical Communication System: Utilizing High‐Performance Organic–Inorganic Hybrid Perovskite‐Based Photodetectors

Abstract

Optical communication has become a research hotspot in modern non‐contact communication systems, and high‐performance photodetectors, as a key component, are crucial for achieving high‐fidelity signal transmission. Photoconductive devices (PCDs) are expected to find applications in the field of optical communication due to their advantages in high gain. However, it is difficult to achieve an effective balance between high responsiveness and fast response times in PCDs, leading to significant challenges in their commercial applications in the field of optical communication. In this paper, by employing both the mask method and channel width tuning method, a high‐performance PCD is developed based on the Ag‐MAPbI3‐Ag structure, demonstrating a high responsivity of 45.5 A W−1, a high detectivity of 7 × 1012 Jones, and a fast response time of 0.35 ms. Finally, this device is integrated into an optical communication system using embedded technology, effectively achieves byte transmission, and demonstrates the practical application of single‐crystal MAPbI3 PCD as a signal receiver in the system. This research provides a noteworthy approach to facilitating the seamless integration and commercialization of optical communication systems utilizing perovskite single‐crystal devices, while also paving the way for optical interconnects based on perovskite.

Self-powered stable high-performance UV–Vis–NIR broadband photodetector based on PVP-Cobalt@Carbon nanofibers/n-GaAs heterojunction

“…In the simplest approach, a heterojunction with one wide bandgap and the other narrow bandgap direct bandgaps can provide a photodetector operating in a wide spectral region with proper optimization. For this purpose, a large number of organic, inorganic-based or hybrid heterojunctions have been widely studied for this purpose in recent years [18][19][20][21][22][23][24][25][26].…”

Surface Engineering of Perovskite Single Crystals by Atomic Layer Deposited Tin Oxide for Optical Communication

“…As shown in the specific demonstration video (Video S1), we can see that the detector based on the SnO x -treated FAPbBr 3 single crystal can successfully realize real-time optical communication with a baud of 2400 Bd. Figure c shows the variation of high and low voltage to identify the digital signals based on binary and present their representation of “NCU” in ASCII. , …”

“…Figure 4c shows the variation of high and low voltage to identify the digital signals based on binary and present their representation of "NCU" in ASCII. 44,45 Finally, we explore the working stability of FAPbBr 3 single crystals in a humid underwater environment. We tested the extreme situation by directly placing the pristine and SnO xtreated FAPbBr 3 crystals in water.…”