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

被引：25

作者：

Kathirvel, Sasipriya ^{[1
,2
]}

Pedaballi, Sireesha ^{[1
]}

Su, Chaochin ^{[1
]}

Chen, Bo-Ren ^{[2
]}

Li, Wen-Ren ^{[2
]}

机构：

[1] Natl Taipei Univ Technol, Inst Organ & Polymer Mat, Taipei 10608, Taiwan

[2] Natl Cent Univ, Dept Chem, Chungli 32001, Taiwan

来源：

APPLIED SURFACE SCIENCE | 2020年 / 519卷

关键词：

TiO2; nanocrystals; Solvothermal synthesis; Dye loading; Power conversion efficiency; Dye-sensitized solar cells; PHOTOVOLTAIC PERFORMANCE; RUTILE TITANIA; EFFICIENCY; ANATASE; NANOPARTICLES; PHOTOANODE; ELECTRODES; NANORODS;

D O I：

10.1016/j.apsusc.2020.146082

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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 photo-anodes 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 rodshaped 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.

引用

页数：9

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