M. Maleki - Islamic Azad University,Branch of Fouman And Shaft
M. Rozati - Guilan university

In this paper, polycrystalline pure zinc oxide nano structured thin films were deposited on two kinds of single crystal and polycrystalline of p and n type Si in three different substrate temperatures of ۳۰۰, ۴۰۰ and ۵۰۰◦C by low cost APCVD method. Structural, electrical and optical properties of these thin films were characterized by X ray diffraction, two point probe method and UV visible spectrophotometer respectively. IV measurements of these heterojunctions showed that turn on voltage and series resistance will increase with increasing substrate temperature in polycrystalline Si, while in single crystal Si, turn on voltage will decrease. Although they are acceptable diodes, their efficiency as a heterojunction solar cell are so low

Heterojunction, Thin film silicon solar cell, Air pressure CVD, p-type Si, Diodes, ZnO