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It is known that an n-channel MOSFET, operating in the saturation region, is accompanied by visible light emission. The spectral distribution of this emitted light is reported in this paper for the first time. It behaves as exp (-α . hv) under various bias conditions (α: constant); the energy state of hot electrons is described as a Maxwell-Boltzmann distribution. The hot-electron temperature in an n-channel MOSFET is experimentally evaluated from the photon spectrum analysis. As compared with the electric field strength calculated by two-dimensional simulation, the hot-electron temperature is found to be determined as a function of the electric field strength in the drain avalanche region.
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Toriumi et al. (1987) studied this question.
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