Three dimensional-TiO(2) nanotube array photoanode architectures assembled on a thin hollow nanofibrous backbone and their performance in quantum dot-sensitized solar cells

Hyungkyu Han; P Sudhagar; Taeseup Song; Yeryung Jeon; Iván Mora-Seró; Francisco Fabregat-Santiago; Juan Bisquert; Yong Soo Kang; Ungyu Paik

doi:10.1039/c3cc40439k

Three dimensional-TiO(2) nanotube array photoanode architectures assembled on a thin hollow nanofibrous backbone and their performance in quantum dot-sensitized solar cells

Chem Commun (Camb). 2013 Apr 7;49(27):2810-2. doi: 10.1039/c3cc40439k.

Authors

Hyungkyu Han¹, P Sudhagar, Taeseup Song, Yeryung Jeon, Iván Mora-Seró, Francisco Fabregat-Santiago, Juan Bisquert, Yong Soo Kang, Ungyu Paik

Affiliation

¹ Department of Materials Science & Engineering, Hanyang University, Seoul 133791, South Korea.

PMID: 23440285
DOI: 10.1039/c3cc40439k

Abstract

Facile synthesis of TiO2 nanotube branched (length ∼0.5 μm) thin hollow-nanofibers is reported. The hierarchical three dimensional photoanodes (H-TiO2-NFs) (only ∼1 μm thick) demonstrate their excellent candidature as photoanodes in QD-sensitized solar cells, exhibiting ∼3-fold higher energy conversion efficiency (η = 2.8%, Jsc = 8.8 mA cm(-2)) than that of the directly grown nanotube arrays on a transparent conducting oxide (TCO) substrate (η = 0.9%, Jsc = 2.5 mA cm(-2)).