Effect of precipitating agent NaOH on the synthesis of SrTiO                         3                         /TiO                         2                          heterostructure for dye-sensitized solar cells

Asanee Somdee; Tanakorn Osotchan

doi:10.1016/j.matchemphys.2019.03.018

Effect of precipitating agent NaOH on the synthesis of SrTiO ₃ /TiO ₂ heterostructure for dye-sensitized solar cells

Asanee Somdee
, Tanakorn Osotchan

King Mongkut's University of Technology North Bangkok
Mahidol University

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

19 Citations (Scopus)

Abstract

In this work, the effect of precipitating agent NaOH on the growth of SrTiO ₃ blocking layer to serve as the charge recombination barrier for DSSC based TiO ₂ were investigated. The SrTiO ₃ /TiO ₂ heterostructure was synthesized by the hydrothermal method. The structure and surface morphology of SrTiO ₃ /TiO ₂ heterostructure were carried out by SEM, TEM and XRD characterization techniques. The optical band gap of TiO ₂ NR and SrTiO ₃ /TiO ₂ heterostructure were studied by the UV–visible spectrophotometer. The estimated band gap of TiO ₂ nanorod and SrTiO ₃ /TiO ₂ heterostructure were typically 3.0–3.1 eV. At the best condition for fabrication (0.001 M NaOH), the SrTiO ₃ /TiO ₂ heterostructure photoanode achieves the highest photo-conversion efficiency of 2.68%, which is 38% higher than the bare TiO ₂ nanorod photoanode (1.93%). By further analysis with the EIS, the results reveals that the added SrTiO ₃ blocking layer is enhanced the DSSCs performance by prolonging the charge recombination and also improve the charge transfer resistance in the photoanode.

Original language	English
Pages (from-to)	210-214
Number of pages	5
Journal	Materials Chemistry and Physics
Volume	229
DOIs	https://doi.org/10.1016/j.matchemphys.2019.03.018
Publication status	Published - 1 May 2019
Externally published	Yes

UN SDGs

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

SDG 7 Affordable and Clean Energy

Keywords

DSSC
Heterostructure
SrTiO /TiO

Access to Document

10.1016/j.matchemphys.2019.03.018

Cite this

Somdee, A., & Osotchan, T. (2019). Effect of precipitating agent NaOH on the synthesis of SrTiO ₃ /TiO ₂ heterostructure for dye-sensitized solar cells Materials Chemistry and Physics, 229, 210-214. https://doi.org/10.1016/j.matchemphys.2019.03.018

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title = " Effect of precipitating agent NaOH on the synthesis of SrTiO 3 /TiO 2 heterostructure for dye-sensitized solar cells ",

abstract = " In this work, the effect of precipitating agent NaOH on the growth of SrTiO 3 blocking layer to serve as the charge recombination barrier for DSSC based TiO 2 were investigated. The SrTiO 3 /TiO 2 heterostructure was synthesized by the hydrothermal method. The structure and surface morphology of SrTiO 3 /TiO 2 heterostructure were carried out by SEM, TEM and XRD characterization techniques. The optical band gap of TiO 2 NR and SrTiO 3 /TiO 2 heterostructure were studied by the UV{\textendash}visible spectrophotometer. The estimated band gap of TiO 2 nanorod and SrTiO 3 /TiO 2 heterostructure were typically 3.0{\textendash}3.1 eV. At the best condition for fabrication (0.001 M NaOH), the SrTiO 3 /TiO 2 heterostructure photoanode achieves the highest photo-conversion efficiency of 2.68\%, which is 38\% higher than the bare TiO 2 nanorod photoanode (1.93\%). By further analysis with the EIS, the results reveals that the added SrTiO 3 blocking layer is enhanced the DSSCs performance by prolonging the charge recombination and also improve the charge transfer resistance in the photoanode.",

keywords = "DSSC, Heterostructure, SrTiO /TiO",

author = "Asanee Somdee and Tanakorn Osotchan",

note = "Publisher Copyright: {\textcopyright} 2019 Elsevier B.V.",

year = "2019",

month = may,

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doi = "10.1016/j.matchemphys.2019.03.018",

language = "English",

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Somdee, A & Osotchan, T 2019, ' Effect of precipitating agent NaOH on the synthesis of SrTiO ₃ /TiO ₂ heterostructure for dye-sensitized solar cells ', Materials Chemistry and Physics, vol. 229, pp. 210-214. https://doi.org/10.1016/j.matchemphys.2019.03.018

Effect of precipitating agent NaOH on the synthesis of SrTiO ₃ /TiO ₂ heterostructure for dye-sensitized solar cells . / Somdee, Asanee; Osotchan, Tanakorn.
In: Materials Chemistry and Physics, Vol. 229, 01.05.2019, p. 210-214.

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

TY - JOUR

T1 - Effect of precipitating agent NaOH on the synthesis of SrTiO 3 /TiO 2 heterostructure for dye-sensitized solar cells

AU - Somdee, Asanee

AU - Osotchan, Tanakorn

PY - 2019/5/1

Y1 - 2019/5/1

N2 - In this work, the effect of precipitating agent NaOH on the growth of SrTiO 3 blocking layer to serve as the charge recombination barrier for DSSC based TiO 2 were investigated. The SrTiO 3 /TiO 2 heterostructure was synthesized by the hydrothermal method. The structure and surface morphology of SrTiO 3 /TiO 2 heterostructure were carried out by SEM, TEM and XRD characterization techniques. The optical band gap of TiO 2 NR and SrTiO 3 /TiO 2 heterostructure were studied by the UV–visible spectrophotometer. The estimated band gap of TiO 2 nanorod and SrTiO 3 /TiO 2 heterostructure were typically 3.0–3.1 eV. At the best condition for fabrication (0.001 M NaOH), the SrTiO 3 /TiO 2 heterostructure photoanode achieves the highest photo-conversion efficiency of 2.68%, which is 38% higher than the bare TiO 2 nanorod photoanode (1.93%). By further analysis with the EIS, the results reveals that the added SrTiO 3 blocking layer is enhanced the DSSCs performance by prolonging the charge recombination and also improve the charge transfer resistance in the photoanode.

AB - In this work, the effect of precipitating agent NaOH on the growth of SrTiO 3 blocking layer to serve as the charge recombination barrier for DSSC based TiO 2 were investigated. The SrTiO 3 /TiO 2 heterostructure was synthesized by the hydrothermal method. The structure and surface morphology of SrTiO 3 /TiO 2 heterostructure were carried out by SEM, TEM and XRD characterization techniques. The optical band gap of TiO 2 NR and SrTiO 3 /TiO 2 heterostructure were studied by the UV–visible spectrophotometer. The estimated band gap of TiO 2 nanorod and SrTiO 3 /TiO 2 heterostructure were typically 3.0–3.1 eV. At the best condition for fabrication (0.001 M NaOH), the SrTiO 3 /TiO 2 heterostructure photoanode achieves the highest photo-conversion efficiency of 2.68%, which is 38% higher than the bare TiO 2 nanorod photoanode (1.93%). By further analysis with the EIS, the results reveals that the added SrTiO 3 blocking layer is enhanced the DSSCs performance by prolonging the charge recombination and also improve the charge transfer resistance in the photoanode.

KW - DSSC

KW - Heterostructure

KW - SrTiO /TiO

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DO - 10.1016/j.matchemphys.2019.03.018

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JO - Materials Chemistry and Physics

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Somdee A, Osotchan T. Effect of precipitating agent NaOH on the synthesis of SrTiO ₃ /TiO ₂ heterostructure for dye-sensitized solar cells Materials Chemistry and Physics. 2019 May 1;229:210-214. doi: 10.1016/j.matchemphys.2019.03.018