Investigating the Effect of Crystal Morphology on Optoelectronic Properties of Zinc Phosphide Thin Films via Optical-pump Terahertz Probe Spectroscopy

Yinghong Huang,Xinyun Liu,Rajrupa Paul,Elias Z. Stutz, Mandi Zamani,Djamshid A. Damryl, Lea Buswell,Simon Escobar Steinvall,Jean-Baptiste Leran,Mirjana Dimitrievska, Anna Fontcuberta i Morra,Jessica L. Boland

2023 48TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES, IRMMW-THZ（2023）

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摘要

Zinc phosphide ( Zn3P2) is a promising earth-abundant material for solar cell applications but calls for the further understanding of its optoelectronic properties. In this work, we perform contact-free and noninvasive optical-pump terahertz probe (OPTP) spectroscopy on various Zn3P2 thin film samples and extract the crucial material properties - carrier lifetime and mobility - that dominate the electron transport and device performance, from the OPTP THz radiation response.

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