Journal
APPLIED PHYSICS LETTERS
Volume 96, Issue 6, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3313948
Keywords
amorphous semiconductors; cadmium compounds; carbon; charge exchange; electrodes; II-VI semiconductors; mesoporous materials; nanoporous materials; polymer electrolytes; semiconductor quantum dots; solar cells
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Funding
- Korea Science and Engineering Foundation
- Ministry of Science and Technology [ROA2005-000-103-0]
- WCU [R31-2008-000-10035-0]
- NRF [2009-0077413]
- Ministry of Education, Science & Technology (MoST), Republic of Korea [R31-2008-000-10035-0] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [과06B1510, 2009-0077413] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Hierarchical nanostructured spherical carbon with hollow core/mesoporous shell (HCMS) was explored as a counter electrode in CdSe quantum-dot-sensitized solar cells. Compared with conventional Pt electrodes and commercially available activated carbon, the HCMS carbon counter electrode exhibits a much larger fill factor due to the considerably decreased charge transfer resistance at the interface of the counter electrode/polysulfide electrolyte. Furthermore, a solar cell with the HCMS carbon counter electrode presents a high power conversion efficiency of up to 3.90% as well as an incident photon-to-current conversion efficiency peak of 80%.
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