研究目的
Comparing the transient photo-response of crystalline silicon and perovskite obtained using BWO and CIDO-6 sources operated at 140 GHz.
研究成果
The study successfully compared the use of BWO and CIDO-6 as probe sources for materials characterization at 140 GHz. CIDO-6 showed a higher peak voltage detection but more oscillatory decay for perovskite. The research opens avenues for further studies on frequency-dependent error between different probe sources.
研究不足
The study notes the oscillatory decay of CIDO-6 response for perovskite and suggests further averaging could eliminate these oscillations. No systematic relationship was found between mmw transmissivity and laser fluence.
1：Experimental Design and Method Selection:
The study compares the use of BWO and IMPATT diode cavity oscillator (CIDO-6) as probe sources for materials characterization.
2：Sample Selection and Data Sources:
Crystalline silicon and perovskite (MAPbI3) samples were used, illuminated by a 532 nm laser.
3：List of Experimental Equipment and Materials:
BWO system, CIDO-6, 532 nm laser, ZBD detector, LNA, high-speed digitizer, TPX lenses, kapton wire-grid polarizer, mylar beam-splitter.
4：Experimental Procedures and Operational Workflow:
An L-shaped quasi-optical arrangement was made for transmission-based TRmmWC measurements. The setup included a laser pump, probe source (BWO or CIDO-6), detector, and digitizer for data acquisition.
5：Data Analysis Methods:
The transient photo-responses were compared, focusing on peak signal detection, transmissivity, and decay profiles.
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