메뉴 건너뛰기




Volumn 48, Issue 47, 2009, Pages 8981-8985

Optical fiber/nanowire hybrid structures for efficient three-dimensional dye-sensitized solar cells

Author keywords

Dyes pigments; Energy conversion; Nanostructures; Optical fibers; Solar cells

Indexed keywords

DYE-SENSITIZED SOLAR CELL; DYE-SENSITIZED SOLAR CELLS; DYES/PIGMENTS; FIBER AXIS; HYBRID STRUCTURE; LIGHT ILLUMINATION; NANOWIRE ARRAYS;

EID: 70449127419     PISSN: 14337851     EISSN: None     Source Type: Journal    
DOI: 10.1002/anie.200904492     Document Type: Article
Times cited : (189)

References (30)
  • 12
  • 18
    • 70449105477 scopus 로고    scopus 로고
    • note
    • The effective surface area or roughness factor (RF) is defined as the total film, area per unit substrate. The measured RF is 267 for the three-sided rectangular fiber and 196 for the circular fiber. RF was measured by UV/Vis spectroscopy by desorbing the dye in an alkaline aqueous solution. The calculation of the roughness factor for the NA case is straightforward because the incident light intensity is fairly uniform, across the illumination area. For the PA case, the intensity of the incident light decays as the light travels along the axis. The calculated roughness factor may not truly affect the roughness factor.
  • 20
    • 70449108620 scopus 로고    scopus 로고
    • note
    • The electrode was fabricated by depositing a thin film of Pt on a glass substrate. The configuration of the Pt counterelectrode is important for deciding the collection efficiency of the holes. The flat Pt electrode can effectively collect the holes generated at the bottom surface of the fiber adjacent to the electrode, but the holes generated at the upper surface may not reach, the electrode before recombining with electrons and/or other species in electrolyte. Moreover, in such a design configuration, the most effective power generation portion is the upper part of the fiber that directly faces the sunlight, while the sunlight is largely attenuated once it penetrates through the ZnO NWs, ITO layer, and fiber to reach the bottom surface of the fiber. This attenuation is part of the reason that the EEF is high but the absolute energy conversion efficiency is low for this configuration.
  • 21
    • 70449117227 scopus 로고    scopus 로고
    • note
    • We found experimentally that the longer NWs resulted in higher efficiencies. NW arrays around 25 μm in length were the longest we grew by using a chemical approach. However, superlong NWs usually form a dense film adjacent to the fiber because of the lateral, growth of the NWs.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.