13.56MHz Rectifying Diodes Based on Metal Halide Perovskite

TL;DR

This paper demonstrates that metal halide perovskite diodes can effectively rectify signals at 13.56 MHz, showing high rectification ratios and minimal ion migration at high frequencies, indicating their potential for high-frequency RFID applications.

Contribution

The study introduces high-frequency rectifying diodes based on metal halide perovskites that overcome ion-migration issues, expanding their application scope in RFID technology.

Findings

Diodes rectify signals at 13.56 MHz with a rectification ratio of 1.9 x 10^3.

Ion migration does not occur at high frequencies, ensuring stable diode performance.

High carrier mobility and ion-migration suppression make MHPs suitable for high-frequency applications.

Abstract

The increasing use of portable and wireless technologies has led to a growing focus on radio-frequency identification (RFID) tags. Among the various devices in RFID tags, rectifying diodes are the most demanding in terms of high-frequency performance, and these diodes are dominated by organic materials. However, their intrinsic low carrier mobility largely limits the rectifying ability of organic diodes. As an alternative, metal halide perovskites (MHPs) possess high carrier mobility, making them potential candidates for higher-frequency applications. Whereas their ion-migration issue may deteriorate their high-frequency performance. In this study, we report rectifying diodes based on MHPs that can rectify an incoming sinusoidal signal at 13.56 MHz. The diodes exhibit a high rectification ratio of 1.9 x 103 at 1 V and can rectify signals at even higher frequencies. We designed a triangular wave detection method to measure the intensity of ion-migration at different frequencies. Interestingly, the ion-migration did not occur at such a high frequency. The high-frequency stagnant ions and excellent carrier mobility make MHPs unexpectedly suitable for high-frequency applications, providing a promising solution to ion-migration issues and paving the way for perovskites in high-frequency areas.