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

Ghobadi, Amir; Yavuz, Halil; Ulusoy, T.; Icli, K.; Ozenbas, Macit; Okyay, Ali

doi:10.1016/j.electacta.2015.01.079

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

Ghobadi A., Yavuz H. İ., Ulusoy T. G., Icli K. C., Ozenbas M., Okyay A. K.

ELECTROCHIMICA ACTA, cilt.157, ss.23-30, 2015 (SCI-Expanded, Scopus)

Yayın Türü: Makale / Tam Makale
Cilt numarası: 157
Basım Tarihi: 2015
Doi Numarası: 10.1016/j.electacta.2015.01.079
Dergi Adı: ELECTROCHIMICA ACTA
Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
Sayfa Sayıları: ss.23-30
Açık Arşiv Koleksiyonu: AVESİS Açık Erişim Koleksiyonu
Van Yüzüncü Yıl Üniversitesi Adresli: Evet

Özet

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. (C) 2015 Elsevier Ltd. All rights reserved.