Photovoltaic Characteristics of ZnO Nanoparticles

doi:10.3969/j.issn.0251-0790.2012.03.024

Abstract

Abstract:

Transient photovoltaic technology(TRP) and surface photovoltaic spectrum(SPS) were used for studying the photogenerated charge of nano-ZnO. The results show that when the time domain of TRP range of 10^-9—10^-7 and 10^-6—10^-3 s, the photovoltage response of SPS appears in range of 320—380 nm. But when time domain is range of 10^-3—10^-1 s, the photovoltage appears in range of 380—420 nm. The three time domains of TRP were belonged to intrinsic transition of nanocrystals, the charge transfer between nanocrystals and surface-state trapping of nanocrystals, respectively. If the intensity of photocharge was large enough or an exexternal electric field was used, then the photovoltage also appeared in range of 300—320 nm.

Key words: Nanocrystal, Photovoltaic characteristics, Charge density, Charge transfer, Time domain

CLC Number:

O644.1

TrendMD:

LI Zi-Heng, LI Gen, DU Yan, WANG De-Jun, ZOU Guang-Tian. Photovoltaic Characteristics of ZnO Nanoparticles[J]. Chem. J. Chinese Universities, 2012, 33(03): 560.

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