Efficient flexible dye-sensitized solar cells from rear illumination based on different morphologies of titanium dioxide photoanode

IF 4.8 4区物理与天体物理 Q2 PHYSICS, CONDENSED MATTER

Journal of Semiconductors Pub Date : 2024-02-01 DOI:10.1088/1674-4926/45/2/022801

Zhe He, Gentian Yue, Yueyue Gao, Chen Dong, Furui Tan

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Abstract

The TiO₂ with nanoparticles (NPs), nanowires (NWs), nanorods (NRs) and nanotubes (NTs) structures were prepared by using a in-situ hydrothermal technique, and then proposed as a photoanode for flexible dye-sensitized solar cell (FDSSC). The influences of the morphology of TiO₂ on the photovoltaic performances of FDSSCs were investigated. Under rear illumination of 100 mW·cm⁻², the power conversion efficiencies of FDSSCs achieved 6.96%, 7.36%, 7.65%, and 7.83% with the TiO₂ photoanodes of NPs, NWs, NRs, and NTs and PEDOT counter electrode. The FDSSCs based on TiO₂ NRs and NTs photoanodes have higher short circuit current densities and power conversion efficiencies than that of the others. The enhanced power conversion efficiency is responsible for their nanotubes and rod-shaped ordered structures, which are more beneficial to transmission of electron and hole in semiconductor compared to the TiO₂ nanoparticles and nanowires disordered structure.

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基于不同形态二氧化钛光阳极的高效柔性背照式染料敏化太阳能电池

利用原位水热技术制备了具有纳米颗粒（NPs）、纳米线（NWs）、纳米棒（NRs）和纳米管（NTs）结构的二氧化钛，并将其作为柔性染料敏化太阳能电池（FDSSC）的光阳极。研究了 TiO2 形貌对 FDSSC 光电性能的影响。在100 mW-cm-2的后照下，NPs、NWs、NRs和NTs的TiO2光阳极与PEDOT对电极的FDSSC功率转换效率分别达到6.96%、7.36%、7.65%和7.83%。与其他光阳极相比，基于 TiO2 NRs 和 NTs 光阳极的 FDSSC 具有更高的短路电流密度和功率转换效率。功率转换效率的提高归功于它们的纳米管和棒状有序结构，与 TiO2 纳米颗粒和纳米线的无序结构相比，它们更有利于电子和空穴在半导体中的传输。

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来源期刊

Journal of Semiconductors PHYSICS, CONDENSED MATTER-

CiteScore

6.70

自引率

9.80%

发文量

119

期刊介绍： Journal of Semiconductors publishes articles that emphasize semiconductor physics, materials, devices, circuits, and related technology.