近日，浙江大学狄大卫团队研究了双腔钙钛矿装置的电驱动激光。该项研究成果发表在2025年8月27日出版的《自然》杂志上。

解决溶液处理的半导体激光器有望实现轻质、可穿戴和可扩展的光电应用。在溶液处理激光器的增益介质中，金属卤化物钙钛矿脱颖而出，因为它们能够在光泵浦下实现波长可调、低阈值的激光发射。尽管在这一领域取得了进展，但钙钛矿半导体的电驱动激光仍然是一个关键挑战。 

研究组展示了一种电驱动的钙钛矿激光器，通过将低阈值单晶钙钛矿微腔子单元与高功率微腔钙钛矿LED（PeLED）子单元垂直集成而构建。在脉冲电激励下，双腔钙钛矿器件的最小激光阈值为92 A cm⁻²（平均阈值：129 A cm⁻²，约为22 °C，空气中），这比最先进的电驱动有机激光器低一个数量级。 

该演示的关键是集成的双腔器件架构，它允许微腔PeLED子单元将定向发射传递到单晶钙钛矿微腔子单元中（耦合效率约为82.7%），以建立激光作用。操作半衰期（T₅₀）为1.8 h（在10 Hz时为6.4× 10⁴伏特脉冲 ）的稳定性优于电泵浦有机激光器。双腔钙钛矿激光器可以在36.2 MHz时表明其在数据传输和计算应用方面的潜力。

附：英文原文

Title: Electrically driven lasing from a dual-cavity perovskite device

Author: Zou, Chen, Ren, Zhixiang, Hui, Kangshuo, Wang, Zixiang, Fan, Yangning, Yang, Yichen, Yuan, Bo, Zhao, Baodan, Di, Dawei

Issue&Volume: 2025-08-27

Abstract: Solution-processed semiconductor lasers promise lightweight, wearable and scalable optoelectronic applications. Among the gain media for solution-processed lasers, metal halide perovskites stand out as an exceptional class because of their ability to achieve wavelength-adjustable, low-threshold lasing under optical pumping1,2,3,4,5,6,7,8. Despite the progress in this field, electrically driven lasing from perovskite semiconductors remains a critical challenge. Here we demonstrate an electrically driven perovskite laser, constructed by vertically integrating a low-threshold single-crystal perovskite microcavity sub-unit with a high-power microcavity perovskite LED (PeLED) sub-unit. Under pulsed electrical excitation, the dual-cavity perovskite device shows a minimum lasing threshold of 92Acm2 (average threshold: 129Acm2, at about 22°C, in air), which is an order of magnitude lower than that of state-of-the-art electrically driven organic lasers9,10. Key to this demonstration is the integrated dual-cavity device architecture, which allows the microcavity PeLED sub-unit to deliver directional emission into the single-crystal perovskite microcavity sub-unit (at a coupling efficiency of about 82.7%) to establish the lasing action. An operational half-life (T50) of 1.8h (6.4×104 voltage pulses at 10Hz) is achieved, outperforming the stability of electrically pumped organic lasers9,10. The dual-cavity perovskite laser can be rapidly modulated at a bandwidth of 36.2MHz, indicating its potential for data transmission and computational applications.

DOI: 10.1038/s41586-025-09457-2

Source: https://www.nature.com/articles/s41586-025-09457-2