On the possibility of determining the diffusion length of excitons in semiconductors from photomagnetic measurement data
I. G. AtabaevPhysicotechnical Institute, Physics-Sun Scientific Production Association, Uzbek Academy of Sciences, ul. Mavlanova 2B, Tashkent, 700084, UzbekistanN. A. MatchanovPhysicotechnical Institute, Physics-Sun Scientific Production Association, Uzbek Academy of Sciences, ul. Mavlanova 2B, Tashkent, 700084, UzbekistanM. U. KhazhievPhysicotechnical Institute, Physics-Sun Scientific Production Association, Uzbek Academy of Sciences, ul. Mavlanova 2B, Tashkent, 700084, UzbekistanD. SaidovPhysicotechnical Institute, Physics-Sun Scientific Production Association, Uzbek Academy of Sciences, ul. Mavlanova 2B, Tashkent, 700084, Uzbekistan
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Аннотация
The effect of a magnetic field on the photocurrent I ph in Si and GaAs solar cells is investigated. It is shown that the observed change in the photocurrent I ph of the solar cells in response to a magnetic field can be caused by a decrease in the diffusion length of excitons L exc. A simplified model of the photomagnetic experiment is proposed to estimate the diffusion length of excitons L exc and the contribution made by excitons to the photocurrent of the solar cells.
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