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2 July 2019 Is a glowing LED meaningful to determine the Plank's constant accurately?
Chetan Kotabage
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Proceedings Volume 11143, Fifteenth Conference on Education and Training in Optics and Photonics: ETOP 2019; 111432S (2019) https://doi.org/10.1117/12.2508193
Event: Fifteenth Conference on Education and Training in Optics and Photonics: ETOP 2019, 2019, Quebec City, Quebec, Canada
Abstract
Plank’s constant is a fundamental constant in Physical sciences and Millikan was awarded Noble prize for its experimental determination. With the advent of solid state electronic devices, experiments were designed to determine the Plank’s constant utilizing LED.1, 2 Herrmann, Sch¨atzle3 and Morehouse4 have discussed the validity of this experiment. In this paper, the validity of this experiment is re-examined. The measurements of the longest wavelength light emitted by LED and precise determination of band gap energy of LED are essential for accurate determination of Plank’s constant by utilizing LED.5 An experimental study of these arguments is also presented in this paper.
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Chetan Kotabage "Is a glowing LED meaningful to determine the Plank's constant accurately?", Proc. SPIE 11143, Fifteenth Conference on Education and Training in Optics and Photonics: ETOP 2019, 111432S (2 July 2019); https://doi.org/10.1117/12.2508193
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KEYWORDS
Light emitting diodes
Diodes
Photoelectric effect
Semiconductors
Spectroscopy
Physical sciences
Physics
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