Light sources are ubiquitous in our lives. Common light sources include sunlight and incandescent lamps, which emit visible spectrum to help us to see surrounding objects via blackbody radiation. Further understanding and control on the quanta of light, called photons, have led to numerous advances in nanophotonics and related research fields, but recently their impact has been most notable in quantum computing, com-munications, biosensing, and imaging technology. Most of these applications have been made possible through the development of ultrasmall and ultrafast light sources based on advanced nanotechnology. In this review, we aim to give a clear picture of the historical achievements regarding light sources and how recent studies have developed the field of ultrasmall light sources, especially in relation to quantum electron tunneling mechanisms. Finally, we discuss the potential applications for emerging quantum devices and sensing technologies.
Bibliographical noteFunding Information:
This research was supported by the National Research Foundation (NRF) of Korea under the “Korean-Swiss Science and Technology Program” (2019K1A3A1A1406720011), the Ministry of Trade, Industry and Energy (MOTIE, project number 10080625), the Korea Semiconductor Research Consortium (KSRC) program for the development of future semiconductor devices, Samsung Electronics, and the frame-work of Warm Heart Center program managed by the Institute of Convergence Science, Yonsei University.
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All Science Journal Classification (ASJC) codes
- Electrical and Electronic Engineering
- Condensed Matter Physics
- Materials Science (miscellaneous)
- Physical and Theoretical Chemistry