We study the effect of texturing on the optical properties and performance of PIN-type a-Si:H photovoltaic cells. We use a doubly periodic texture profile with the period of the texturing being finer than visible wavelengths and its depth comparable to the period. We consider the effects of texturing various individual interfaces in the cell as well as those of simultaneously texturing two interfaces. In the latter case, we compare the effects of inphase and out-of-phase texturing. We give curves showing the variation of absorbed energy with both wavelength and depth in the cell (at a fixed wavelength). We demonstrate that, in the case of appropriate conformal roughening, the efficiency of a cell may be increased from 10.0 to 12.0%.

© 1986 Optical Society of America

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