Superstrate CuInS2 Photovoltaics with Enhanced Performance Using a CdS/ZnO Nanorod Array
SCIE
SCOPUS
- Title
- Superstrate CuInS2 Photovoltaics with Enhanced Performance Using a CdS/ZnO Nanorod Array
- Authors
- Lee, D; Yong, K
- Date Issued
- 2012-12
- Publisher
- ACS
- Abstract
- An air-stable, low-temperature, solution-based process for preparing CuInS2 (CIS) superstrate solar cells using CdS-decorated ZnO nanorod (NR) arrays is reported. Efficient light harvesting and photoexcited charge transport were achieved by fabricating a ZnO NR window layer with a large p-n junction area via a hydrothermal reaction. A CdS buffer layer was deposited on a transparent ZnO NR substrate at room temperature via successive ion layer adsorption and reaction (SILAR) or nanocrystal layer deposition (NCLD). The prepared CdS/ZnO NR assembly was coated with a CIS absorber layer without the need for surface passivation organics or dispersion reagents. The CIS precursor solution, prepared using a metal salt, thiourea, and an amine solvent, yielded CIS nanocrystals (NCs) at temperatures up to 250 degrees C. The CIS/CdS/ZnO NR heterojunction structure exhibited an excellent photovoltaic performance compared to a planar ZnO film device due to enhanced light transmittance toward the absorber and a high charge collection efficiency. These results suggest that a superstrate CIS/CdS/ZnO NRs photovoltaic cell fabricated via the low-cost route described here has great potential as a next-generation solar cell device.
- Keywords
- ZnO; nanorod arrays; precursor solution; nanocrystal; thin film solar cell; superstrate; FILM SOLAR-CELLS; THIN-FILMS; NANOCRYSTALS; DEPOSITION; TEMPERATURE; INKS; HETEROJUNCTION; NANOPARTICLES; LAYER
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/15647
- DOI
- 10.1021/AM301957D
- ISSN
- 1944-8244
- Article Type
- Article
- Citation
- ACS APPLIED MATERIALS & INTERFACES, vol. 4, no. 12, page. 6757 - 6764, 2012-12
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