NDLI: Transport mechanisms in porous silicon layer and ZnO/PSL heterostructures

Content Provider	IEEE Xplore Digital Library
Author	Vasquez-A, M.A. Garcia-Salgado, G. Romero-Paredes, G. Pea-Sierra, R.
Copyright Year	2009
Description	Author affiliation: Centro de Investigación en Dispositivos Semiconductores, BUAP. Puebla. Pue. México (Garcia-Salgado, G.) \|\| Department of Electrical Engineering SEES del CINVESTAV-IPN, Mexico D.F., Mexico (Vasquez-A, M.A.; Romero-Paredes, G.; Pea-Sierra, R.)
Abstract	The transport mechanisms in both silicon porous layers (PSL) and ZnO/PSL/c-Si heterostructures were identified by Current-Voltage (I–V) measurements. The PSL were made by anodic etching of p-type (100) Silicon (Si) wafers with resistivity of 1–5 Ω-cm. The heterostructures were manufactured by depositing a zinc oxide (ZnO) film by DC-sputtering on the previously obtained PSL. The measured electrical resistivity of the ZnO films and the PSL were of 5.3 × $10^{5}$ and 5.7 × $10^{7}$ Ω-cm, respectively. The current flow in the PSL is limited by the space-charge regions (SCL), due to the charge trapped in the distinct energy localized states. For the heterostructures similar results were found, where the dominant transport mechanisms are associated to the physical characteristics of the PSL and the ZnO films. Accordingly a bandgap diagram for ZnO/PSL heterostructure is proposed, where the participation of the variety of the defect levels are considered.
Starting Page	1
Ending Page	5
File Size	223007
Page Count	5
File Format	PDF
ISBN	9781424446889
DOI	10.1109/ICEEE.2009.5393435
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-01-10
Publisher Place	Mexico
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Gold Luminescence Conductivity Porous Silicon Layers (PSL) Etching Electrical Properties Substrates Electrodes Zinc Oxide (ZnO) Current measurement Space-Charge-Limited (SCL) Mechanism Heterojunctions Zinc oxide Silicon Manufacturing
Content Type	Text
Resource Type	Article

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