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Sea urchin TiO2-nanoparticle hybrid composite photoelectrodes for CdS/CdSe/ZnS quantum-dot-sensitized solar cells

Title 
Sea urchin TiO2-nanoparticle hybrid composite photoelectrodes for CdS/CdSe/ZnS quantum-dot-sensitized solar cells
Authors 
Kong, EH; Chang, YJ; 장현명; Jang, HM; Park, HJ; Yoon, YH; Park, YC
Issue Date 
2012-02
Journal Title 
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
Volume 
14
Issue 
13
Start Page 
4620
Last Page 
4625
Publisher 
RSC
Abstract 
The sea urchin TiO2 (SU TiO2) particles composed of radially aligned rutile TiO2 nanowires are successfully synthesized through the simple solvothermal process. SU TiO2 was incorporated into the TiO2 nanoparticle (NP) network to construct the SU-NP composite film, and applied to the CdS/CdSe/ZnS quantum-dot-sensitized solar cells (QDSSCs). A conversion efficiency of 4.2% was achieved with a short-circuit photocurrent density of 18.2 mA cm(-2) and an open-circuit voltage of 531 mV, which corresponds to similar to 20% improvement as compared with the values obtained from the reference cell made of the NP film. We attribute this extraordinary result to the light scattering effect and efficient charge collection.
Keywords 
CHARGE-COLLECTION EFFICIENCY, TIO2 FILMS, DEPOSITION, FABRICATION, RECOMBINATION, LIGHT, ENERGY, SHAPE CONTROL, CDSE NANOCRYSTALS, CONVERSION EFFICIENCY
URI 
http://oasis.postech.ac.kr/handle/2014.oak/11908
DOI 
http://dx.doi.org/10.1039/C2CP24106D
ISSN 
1463-9076
Article Type 
ARTICLE
Citation 
PHYSICAL CHEMISTRY CHEMICAL PHYSICS, v.14, pp.4620-4625, no.13
Appears in Collections
Division of Advanced Materials Science (AMS) (첨단재료과학부) > 1. Journal Papers

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