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

17 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

UN SDGs

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

SDG 7 Affordable and Clean Energy

Keywords

nanorods
Schottky type
solar cells
UV photodetectors

Access to Document

10.1002/pssa.201700404

Cite this

@article{6e647389796a4166a71316ea58368ac6,

title = "Synthesis of TiO2 Nanorods for Schottky-Type UV-Photodetectors and Third-Generation Solar Cells",

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.",

keywords = "nanorods, Schottky type, solar cells, UV photodetectors",

author = "Ozge Guller and Elif Peksu and Hakan Karaagac",

note = "Publisher Copyright: {\textcopyright} 2017 WILEY-VCH Verlag GmbH \& Co. KGaA, Weinheim",

year = "2018",

month = feb,

day = "21",

doi = "10.1002/pssa.201700404",

language = "English",

volume = "215",

journal = "Physica Status Solidi (A) Applications and Materials Science",

issn = "1862-6300",

publisher = "Wiley-VCH Verlag",

number = "4",

}

TY - JOUR

T1 - Synthesis of TiO2 Nanorods for Schottky-Type UV-Photodetectors and Third-Generation Solar Cells

AU - Guller, Ozge

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.

KW - nanorods

KW - Schottky type

KW - solar cells

KW - UV photodetectors

UR - https://www.scopus.com/pages/publications/85028941445

U2 - 10.1002/pssa.201700404

DO - 10.1002/pssa.201700404

M3 - Article

AN - SCOPUS:85028941445

SN - 1862-6300

VL - 215

JO - Physica Status Solidi (A) Applications and Materials Science

JF - Physica Status Solidi (A) Applications and Materials Science

IS - 4

M1 - 1700404

ER -