Journal
SCIENTIFIC REPORTS
Volume 6, Issue -, Pages -Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/srep37912
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Funding
- National Research Foundation of Korea (NRF) grants - Korean government (MSIP) [NRF-2015M2A2A4A03044653, NRF-2015R1A5A1009962]
- TBP program by Gwangju Institute of Science and Technology
- Ultrashort Quantum Beam Facility Program by Gwangju Institute of Science and Technology
- Ministry of Science, ICT & Future Planning, Republic of Korea [GIST-11] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [2015R1A5A1009962, 2015M2A2A4A03044653] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Hybrid structures of silicon with organic-inorganic perovskites are proposed for optically controllable switching of terahertz (THz) waves over a broad spectral range from 0.2 to 2THz. A 532-nm external laser was utilized to generate photoexcited free carriers at the devices and consequentially to control the terahertz amplitude modulation, obtaining a depth of up to 68% at a laser irradiance of 1.5 W/cm(2). In addition, we compared the performances from three types of perovskite devices fabricated via different solution processing methods and suggested a stable and highly efficient THz switch based on a one-step processing. By this we demonstrated the possibility of perovskites as THz wave switching devices in addition to photovoltaics.
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