Enhanced Performance of Nanowire-Based All-TiO2 Solar Cells using Subnanometer-Thick Atomic Layer Deposited ZnO Embedded Layer

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Date

2015-03-01

Author

Ghobadi, Amir
Yavuz, Halil I.
Ulusoy, T. Gamze
Icli, K. Cagatay
Ozenbas, Macit
OKYAY, Ali Kemal

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In this paper, the effect of angstrom-thick atomic layer deposited (ALD) ZnO embedded layer on photovoltaic (PV) performance of Nanowire-Based All-TiO2 solar cells has been systematically investigated. Our results indicate that by varying the thickness of ZnO layer the efficiency of the solar cell can be significantly changed. It is shown that the efficiency has its maximum for optimal thickness of 1 ALD cycle in which this ultrathin ZnO layer improves device performance through passivation of surface traps without hampering injection efficiency of photogenerated electrons. The mechanisms contributing to this unprecedented change in PV performance of the cell have been scrutinized and discussed.

Subject Keywords

Solar cells, Photovoltaic, Photoelectrochemical, Interface engineering, Titanium dioxide, Atomic layer deposition

URI

https://hdl.handle.net/11511/68350

Journal

ELECTROCHIMICA ACTA

DOI

https://doi.org/10.1016/j.electacta.2015.01.079

Collections

Department of Metallurgical and Materials Engineering, Article

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Citation Formats

A. Ghobadi, H. I. Yavuz, T. G. Ulusoy, K. C. Icli, M. Ozenbas, and A. K. OKYAY, “Enhanced Performance of Nanowire-Based All-TiO2 Solar Cells using Subnanometer-Thick Atomic Layer Deposited ZnO Embedded Layer,” ELECTROCHIMICA ACTA, pp. 23–30, 2015, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/68350.