Time-resolved techniques are widely used in measuring the spectra and lifetimes of the excited states of molecules. However, the relative apparatus always requires gated detector and phase-matching circuitry, which is expensive to implement and maintain. Herein, a novel auto-phase-locked method for time-gated luminescence (TGL) spectra measurement was developed by adjusting the exciting and detecting optical paths to pass through the same chopper wheel, which simultaneously acted as a pulse generator and detecting shutter. This low-cost system needs no phase-matching circuitry or control system. It can detect TGL spectra with a delay time of only microseconds, demonstrating a high temporal resolution for thermally activated delayed fluorescence detection.

中文翻译：

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具有微秒延迟的时控发光光谱的自动锁相测量

时间分辨技术广泛用于测量分子激发态的光谱和寿命。然而，相关设备总是需要门控检测器和相位匹配电路，这对于实施和维护而言是昂贵的。在本文中，通过调节激发光和检测光路通过同一斩波轮，开发了一种新颖的自动锁相方法，用于测量时间门控发光（TGL）光谱，该光路同时用作脉冲发生器和光闸。这种低成本系统不需要相位匹配电路或控制系统。它可以以仅微秒的延迟时间检测TGL光谱，从而证明了热激活延迟荧光检测的高时间分辨率。