期刊
JOURNAL OF MATERIALS CHEMISTRY A
卷 3, 期 19, 页码 10439-10447出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5ta00801h
关键词
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资金
- National Research Foundation (NRF) - Center for Advanced Meta-Materials (CAMM) [2014M3A6B3063716]
- Korea Center for Artificial Photosynthesis (KCAP) [2009-0093883]
- Converged Energy Materials Research Center program of Defense Acquisition Program Administration
- Agency for Defense Development
- National Research Foundation of Korea [2014M3A6B3063716, 2011-0007855, 2009-0093883] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
We report a high energy conversion efficiency of 8.4% at 100 mW cm(-2), which is one of the highest values for N719-based, solid-state, dye-sensitized solar cells (ssDSSCs). Our solar cells are based on one-dimensional (1D) hierarchical hetero-nanotubes consisting of Au cores and SnO2/TiO2 nanosheet double shells (referred to as Au@SnO2@TNSs). Carbonaceous nanofibers (CNFs) with tellurium (Te) cores are used as dual templates for the inner-deposition of gold and the outer-deposition of the metal oxide layers. An organized mesoporous TiO2 (OM-T) film, with high porosity, large pores, and good interconnectivity, is also prepared via a graft copolymer template approach and utilized as a matrix to disperse the 1D hierarchical nanostructures. Such nanostructures provide good pore-filling for solid electrolytes, faster electron transfer, and enhanced light scattering, as confirmed by reflectance spectroscopy, incident photon-to-electron conversion efficiency (IPCE) spectroscopy, and intensity-modulated photocurrent spectroscopy (IMPS)/intensity-modulated photovoltage spectroscopy (IMVS).
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