title: Improvement of dye-sensitized solar cells toward the broader light harvesting of the solar spectrum.
abstract: Dye-sensitized solar cells (DSSCs) have been extensively evolved for the past two decades in order to improve their cell performance. From the commercialization point of view, the overall solar to electrical energy conversion efficiency should compete with other solar cells. But, due to structural restrictions of DSSC using the liquid electrolyte and a space requirement between two electrodes, the direct tandem construction of DSSCs by stacking of repeating units is highly limited. In this feature article, important research trials to overcome these barriers and a recent research trend to improve the light harvesting strategies mainly panchromatic engineering, various tandem approaches such as parallel tandem, series tandem, p-n tandem etc., have been briefly reviewed.
authors.affiliation: Interdisciplinary School of Green Energy and KIER-UNIST Advanced Center for Energy, Ulsan National Institute of Science and Technology (UNIST), Ulsan 689-798, Republic of Korea.
authors.forename: Suresh Kannan
authors.initials: SK
authors.lastname: Balasingam
authors.forename: Minoh
authors.initials: M
authors.lastname: Lee
authors.forename: Man Gu
authors.initials: MG
authors.lastname: Kang
authors.forename: Yongseok
authors.initials: Y
authors.lastname: Jun