Morphological control of TiO2 nanocrystals by solvothermal synthesis for dye-sensitized solar cell applications

Sasipriya Kathirvel; Sireesha Pedaballi; Chaochin Su; Bo Ren Chen; Wen Ren Li

doi:10.1016/j.apsusc.2020.146082

Morphological control of TiO₂ nanocrystals by solvothermal synthesis for dye-sensitized solar cell applications

Sasipriya Kathirvel
, Sireesha Pedaballi
, Chaochin Su^*
, Bo Ren Chen
, Wen Ren Li

^*Corresponding author for this work

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

34 Scopus citations

Abstract

TiO₂ nanocrystals TETA1, TPRA2, TIPA3, TBUA4, TTBA5, and TBNA6 were prepared using ethanol, 1-propanol, isopropyl alcohol, n-butanol, tert-butyl alcohol, and benzyl alcohol, through the alcohol-based solvothermal method. The morphology, size, and crystallinity of the TiO₂ nanocrystals were characterized utilizing transmission electron microscopy, scanning electron microscopy, X-ray diffraction, and high-resolution transmission electron microscopy analyses. These six TiO₂ nanocrystals with different morphologies were used as photoanodes in dye-sensitized solar cells (DSSCs) and their cell efficiencies were 8.08% (TETA1), 8.38% (TPRA2), 9.18% (TIPA3), 7.68% (TBUA4), 7.85% (TTBA5), and 6.10% (TBNA6). Among them, the well dispersed rod-shaped one-dimensional TiO₂ (TIPA3) photoanode based cell showed the best power conversion efficiency due to its highest dye loading and excellent light-harvesting capacity. This TIPA3 cell demonstrated a fast electron transport rate with suppressed charge recombination which was confirmed from electrochemical impedance spectroscopy.

Original language	English
Article number	146082
Journal	Applied Surface Science
Volume	519
DOIs	https://doi.org/10.1016/j.apsusc.2020.146082
State	Published - 30 07 2020
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2020

UN SDGs

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

SDG 7 Affordable and Clean Energy

Keywords

Dye loading
Dye-sensitized solar cells
Power conversion efficiency
Solvothermal synthesis
TiO nanocrystals

Access to Document

10.1016/j.apsusc.2020.146082

Cite this

@article{a6114a4cfbd4443e81c48a09ef27e0fe,

title = "Morphological control of TiO2 nanocrystals by solvothermal synthesis for dye-sensitized solar cell applications",

abstract = "TiO2 nanocrystals TETA1, TPRA2, TIPA3, TBUA4, TTBA5, and TBNA6 were prepared using ethanol, 1-propanol, isopropyl alcohol, n-butanol, tert-butyl alcohol, and benzyl alcohol, through the alcohol-based solvothermal method. The morphology, size, and crystallinity of the TiO2 nanocrystals were characterized utilizing transmission electron microscopy, scanning electron microscopy, X-ray diffraction, and high-resolution transmission electron microscopy analyses. These six TiO2 nanocrystals with different morphologies were used as photoanodes in dye-sensitized solar cells (DSSCs) and their cell efficiencies were 8.08\% (TETA1), 8.38\% (TPRA2), 9.18\% (TIPA3), 7.68\% (TBUA4), 7.85\% (TTBA5), and 6.10\% (TBNA6). Among them, the well dispersed rod-shaped one-dimensional TiO2 (TIPA3) photoanode based cell showed the best power conversion efficiency due to its highest dye loading and excellent light-harvesting capacity. This TIPA3 cell demonstrated a fast electron transport rate with suppressed charge recombination which was confirmed from electrochemical impedance spectroscopy.",

keywords = "Dye loading, Dye-sensitized solar cells, Power conversion efficiency, Solvothermal synthesis, TiO nanocrystals",

author = "Sasipriya Kathirvel and Sireesha Pedaballi and Chaochin Su and Chen, \{Bo Ren\} and Li, \{Wen Ren\}",

note = "Publisher Copyright: {\textcopyright} 2020",

year = "2020",

month = jul,

day = "30",

doi = "10.1016/j.apsusc.2020.146082",

language = "英语",

volume = "519",

journal = "Applied Surface Science",

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TY - JOUR

T1 - Morphological control of TiO2 nanocrystals by solvothermal synthesis for dye-sensitized solar cell applications

AU - Kathirvel, Sasipriya

AU - Pedaballi, Sireesha

AU - Su, Chaochin

AU - Chen, Bo Ren

AU - Li, Wen Ren

PY - 2020/7/30

Y1 - 2020/7/30

N2 - TiO2 nanocrystals TETA1, TPRA2, TIPA3, TBUA4, TTBA5, and TBNA6 were prepared using ethanol, 1-propanol, isopropyl alcohol, n-butanol, tert-butyl alcohol, and benzyl alcohol, through the alcohol-based solvothermal method. The morphology, size, and crystallinity of the TiO2 nanocrystals were characterized utilizing transmission electron microscopy, scanning electron microscopy, X-ray diffraction, and high-resolution transmission electron microscopy analyses. These six TiO2 nanocrystals with different morphologies were used as photoanodes in dye-sensitized solar cells (DSSCs) and their cell efficiencies were 8.08% (TETA1), 8.38% (TPRA2), 9.18% (TIPA3), 7.68% (TBUA4), 7.85% (TTBA5), and 6.10% (TBNA6). Among them, the well dispersed rod-shaped one-dimensional TiO2 (TIPA3) photoanode based cell showed the best power conversion efficiency due to its highest dye loading and excellent light-harvesting capacity. This TIPA3 cell demonstrated a fast electron transport rate with suppressed charge recombination which was confirmed from electrochemical impedance spectroscopy.

AB - TiO2 nanocrystals TETA1, TPRA2, TIPA3, TBUA4, TTBA5, and TBNA6 were prepared using ethanol, 1-propanol, isopropyl alcohol, n-butanol, tert-butyl alcohol, and benzyl alcohol, through the alcohol-based solvothermal method. The morphology, size, and crystallinity of the TiO2 nanocrystals were characterized utilizing transmission electron microscopy, scanning electron microscopy, X-ray diffraction, and high-resolution transmission electron microscopy analyses. These six TiO2 nanocrystals with different morphologies were used as photoanodes in dye-sensitized solar cells (DSSCs) and their cell efficiencies were 8.08% (TETA1), 8.38% (TPRA2), 9.18% (TIPA3), 7.68% (TBUA4), 7.85% (TTBA5), and 6.10% (TBNA6). Among them, the well dispersed rod-shaped one-dimensional TiO2 (TIPA3) photoanode based cell showed the best power conversion efficiency due to its highest dye loading and excellent light-harvesting capacity. This TIPA3 cell demonstrated a fast electron transport rate with suppressed charge recombination which was confirmed from electrochemical impedance spectroscopy.

KW - Dye loading

KW - Dye-sensitized solar cells

KW - Power conversion efficiency

KW - Solvothermal synthesis

KW - TiO nanocrystals

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DO - 10.1016/j.apsusc.2020.146082

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