Synthesis of TiO2 Nanorods for Schottky-Type UV-Photodetectors and Third-Generation Solar Cells

Ozge Guller; Elif Peksu; Hakan Karaagac

doi:10.1002/pssa.201700404

Synthesis of TiO₂ Nanorods for Schottky-Type UV-Photodetectors and Third-Generation Solar Cells

Ozge Guller, Elif Peksu, Hakan Karaagac^*

^*Corresponding author for this work

Department of Physics Engineering

Istanbul Technical University

Research output: Contribution to journal › Article › peer-review

16 Citations (Scopus)

Abstract

TiO₂ nanorods (NRs) are successfully synthesized on fluorine-doped tin-oxide pre-coated glass substrates via hydrothermal technique. The effect of growth parameters on morphology of the synthesized NRs is investigated in detail. The results revealed that critical values for temperature, growth-time, acidity, and precursor concentration are required for the synthesis of well-aligned TiO₂ NRs. Following the optimization of growth parameters, the well-oriented TiO₂ NRS are decorated with a thin-sputtered layer of CdTe (CdCl₂-treated) to form a third generation inorganic-sensitized solar cell. The power conversion efficiency associated with the constructed solar cell is found to be 0.42%, which is exactly 3.5 times larger than that obtained for the non-CdCl₂-treated device structure. As a second part of this study, a Schottky-type Ag/TiO₂ UV-photodetector is fabricated, which exhibited a drastic increase in photocurrent under UV-light exposure, with a responsivity of ∼3 A W⁻¹ for 380 nm at −1 V.

Original language	English
Article number	1700404
Journal	Physica Status Solidi (A) Applications and Materials Science
Volume	215
Issue number	4
DOIs	https://doi.org/10.1002/pssa.201700404
Publication status	Published - 21 Feb 2018

Bibliographical note

Publisher Copyright:
© 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

Funding

This work was supported by Istanbul Technical University (BAP:39349). We gratefully acknowledge Dr. M. Parlak and A. K. Okyay for their help in all our experimental work and measurements.

Funders	Funder number
Istanbul Teknik Üniversitesi	BAP:39349

Keywords

nanorods
Schottky type
solar cells
UV photodetectors

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1002/pssa.201700404

Cite this

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abstract = "TiO2 nanorods (NRs) are successfully synthesized on fluorine-doped tin-oxide pre-coated glass substrates via hydrothermal technique. The effect of growth parameters on morphology of the synthesized NRs is investigated in detail. The results revealed that critical values for temperature, growth-time, acidity, and precursor concentration are required for the synthesis of well-aligned TiO2 NRs. Following the optimization of growth parameters, the well-oriented TiO2 NRS are decorated with a thin-sputtered layer of CdTe (CdCl2-treated) to form a third generation inorganic-sensitized solar cell. The power conversion efficiency associated with the constructed solar cell is found to be 0.42%, which is exactly 3.5 times larger than that obtained for the non-CdCl2-treated device structure. As a second part of this study, a Schottky-type Ag/TiO2 UV-photodetector is fabricated, which exhibited a drastic increase in photocurrent under UV-light exposure, with a responsivity of ∼3 A W−1 for 380 nm at −1 V.",

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AU - Peksu, Elif

AU - Karaagac, Hakan

PY - 2018/2/21

Y1 - 2018/2/21

N2 - TiO2 nanorods (NRs) are successfully synthesized on fluorine-doped tin-oxide pre-coated glass substrates via hydrothermal technique. The effect of growth parameters on morphology of the synthesized NRs is investigated in detail. The results revealed that critical values for temperature, growth-time, acidity, and precursor concentration are required for the synthesis of well-aligned TiO2 NRs. Following the optimization of growth parameters, the well-oriented TiO2 NRS are decorated with a thin-sputtered layer of CdTe (CdCl2-treated) to form a third generation inorganic-sensitized solar cell. The power conversion efficiency associated with the constructed solar cell is found to be 0.42%, which is exactly 3.5 times larger than that obtained for the non-CdCl2-treated device structure. As a second part of this study, a Schottky-type Ag/TiO2 UV-photodetector is fabricated, which exhibited a drastic increase in photocurrent under UV-light exposure, with a responsivity of ∼3 A W−1 for 380 nm at −1 V.

AB - TiO2 nanorods (NRs) are successfully synthesized on fluorine-doped tin-oxide pre-coated glass substrates via hydrothermal technique. The effect of growth parameters on morphology of the synthesized NRs is investigated in detail. The results revealed that critical values for temperature, growth-time, acidity, and precursor concentration are required for the synthesis of well-aligned TiO2 NRs. Following the optimization of growth parameters, the well-oriented TiO2 NRS are decorated with a thin-sputtered layer of CdTe (CdCl2-treated) to form a third generation inorganic-sensitized solar cell. The power conversion efficiency associated with the constructed solar cell is found to be 0.42%, which is exactly 3.5 times larger than that obtained for the non-CdCl2-treated device structure. As a second part of this study, a Schottky-type Ag/TiO2 UV-photodetector is fabricated, which exhibited a drastic increase in photocurrent under UV-light exposure, with a responsivity of ∼3 A W−1 for 380 nm at −1 V.

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