Document Detail


Performance enhancement through post-treatments of CdS-sensitized solar cells fabricated by spray pyrolysis deposition.
MedLine Citation:
PMID:  20518559     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The CdS-sensitized solar cells (CdS-SSC) were fabricated by spray pyrolysis deposition (SPD) method. The performance of the cells was greatly improved through post-treatments that included thermal oxidation at 500 degrees C for 30 min in an air atmosphere and subsequent chemical etching by 40 mM aqueous HCl solution at room temperature for 30 min, as compared to as-deposited CdS-SSC. The CdS-SSC in a I(-)/I(3)(-) electrolyte system was resulted in the improvement of J(sc) (3.3 --> 5.2 mA/cm(2)), V(oc) (697 --> 758 mV), FF (41.4% --> 46.9%), and (0.95% --> 1.84%). Similarly, the efficiency of CdS-SSC in a noncorrosive polysulfide electrolyte system was also enhanced by the proposed thermal oxidation and etching process. The increase in the cell efficiency is attributed to the reduced charge recombination among sensitizer themselves through the mitigation of overaggregated CdS sensitizers deposited by SPD.
Authors:
Yong Hui Lee; Sang Hyuk Im; Jae Hui Rhee; Jong-Heun Lee; Sang Il Seok
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  ACS applied materials & interfaces     Volume:  2     ISSN:  1944-8244     ISO Abbreviation:  ACS Appl Mater Interfaces     Publication Date:  2010 Jun 
Date Detail:
Created Date:  2010-06-23     Completed Date:  2010-08-10     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101504991     Medline TA:  ACS Appl Mater Interfaces     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1648-52     Citation Subset:  IM    
Affiliation:
KRICT-EPFL Global Research Laboratory, Advanced Materials Division, Korea Research Institute of Chemical Technology, Yuseong, Daejeon 305-600, Republic of Korea.
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MeSH Terms
Descriptor/Qualifier:
Cadmium Compounds / chemistry*
Conservation of Energy Resources
Electrolytes
Hot Temperature
Materials Testing
Microscopy, Electron, Scanning / methods
Microscopy, Electron, Transmission / methods
Nanotechnology / methods
Oxides / chemistry
Oxygen / chemistry
Quantum Dots
Solar Energy
Sulfides / chemistry*
Surface Properties
Temperature
Chemical
Reg. No./Substance:
0/Cadmium Compounds; 0/Electrolytes; 0/Oxides; 0/Sulfides; 1306-19-0/cadmium oxide; 1306-23-6/cadmium sulfide; 7782-44-7/Oxygen

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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