首页|Visible-infrared broadband photodetector and terahertz modulation based on (PEA) 2PbBr4 single crystal
Visible-infrared broadband photodetector and terahertz modulation based on (PEA) 2PbBr4 single crystal
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NETL
NSTL
Elsevier
Organic-inorganic hybrid perovskite phenylethylammonium lead bromide has demonstrated exceptional photoelectric performance in the ultraviolet spectrum, yet its potential in the visible spectrum remains largely unexplored. This study presents a comprehensive investigation of visible-infrared broadband photodetection and terahertz modulation utilizing phenylethylammonium lead bromide (C6H5CH2CH2NH3)2PbBr4, (PEA)2PbBr4) single crystals. We have developed and implemented three distinct crystallization techniques to fabricate bulk, film, and needle-like single crystal samples, enabling thorough exploration of their properties across the visiblenear-infrared spectrum (405 nm-780 nm). The carrier dynamics and modulation characteristics of (PEA)2PbBr4 single crystals were meticulously examined through a non-contact terahertz time-domain spectroscopy pumping system, providing insights into the fundamental mechanisms of charge carrier generation. Our experimental findings demonstrate that (PEA)2PbBr4 single crystals exhibit significant potential for application in visible-nearinfrared broadband photodetectors, offering promising avenues for future optoelectronic device development.
NETL
NSTL
Elsevier
