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- Seok, Sang Il
- Laboratory for Energy Harvesting Materials and Systems
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Quantum-Dot-Sensitized Solar Cells Fabricated by the Combined Process of the Direct Attachment of Colloidal CdSe Quantum Dots Having a ZnS Glue Layer and Spray Pyrolysis Deposition
- Author(s)
- Im, Sang Hyuk, Lee, Yong Hui, Seok, Sang Il, Kim, Sung Woo, Kim, Sang-Wook
- Issued Date
- 2010-12
- Citation
- LANGMUIR, v.26, no.23, pp.18576 - 18580
- Abstract
- We were able to attach CdSe quantum dots (QDs) having a ZnS inorganic glue layer directly to a mesoporous TiO(2) (mp-TiO(2)) surface by spray coating and thermal annealing. Quantum-dot-sensitized solar cells based on CdSe QDs having ZnS as the inorganic glue layer could easily transport generated charge carriers because of the intimate bonding between CdSe and mp-TiO(2). The application of spray pyrolysis deposition (SPD) to obtain additional CdSe layers improved the performance characteristics to V(oc) = 0.45 V, J(sc) = 10.7 mA/cm(2), fill factor = 35.8%, and power conversion efficiency = 1.7%. Furthermore, ZnS post-treatment improved the device performance to V(oc) = 0.57 V, J(sc) = 11.2 mA/cm(2), fill factor = 35.4%, and power conversion efficiency = 2.2%
- Publisher
- AMER CHEMICAL SOC
- ISSN
- 0743-7463
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