A Facile Synthesis of Granular ZnO Nanostructures for Dye-Sensitized Solar Cells. (7th May 2013)

• Record Type: Journal Article
• Authors: Rahman, Md. Mahbubur; Nath, Narayan Chandra Deb; Noh, Kwang-Mo; Kim, Jaecheon; Lee, Jae-Joon
• Other Names: Dimopoulos Theodoros Academic Editor.
• Is Part Of: International journal of photoenergy. Volume 2013(2013)
• Publication Date: 2013-05-07
• Subjects: Photochemistry -- Periodicals; Photobiology -- Periodicals; Chemistry, Physical and theoretical -- Periodicals; Photochimie; Photobiologie; Chimie physique et théorique; Chemistry, Physical and theoretical; Photobiology; Photochemistry; Electronic journals; Periodicals; 541.35
• DOI: 10.1155/2013/563170
• Languages: English
• ISSNs: 1110-662X

Abstract

Abstract : Granular ZnO nanostructures of single-crystalline wurtzite hexagonal phases were synthesized by a facile and low-cost chemical method in aqueous condition. The average size of ZnO nanograin increased with reflux time, and it significantly affected the open circuit potential ( V o c ) while the short circuit current density ( J s c ) was not changed much. The overall energy conversion efficiency was 1.82% with the smaller grain size of ca. 250 nm when it was used as photoelectrode of DSSCs. The positive shifting of the Fermi energy (E F ) and low density of surface states (DOS) were consistent with the reduction of the recombination of excited electron with electrolyte for smaller grains.