Improved photovoltaic performance of CdSe/CdS/PbS quantum dot sensitized ZnO nanorod array solar cell
Single crystalline zinc oxide (ZnO) nanorod array has been used for the fabrication of CdSe/CdS/PbS/ZnO quantum dot sensitized solar cell (QDSSC). The ZnO nanorod array photoanodes are sensitized with consecutive layer of PbS, CdS and CdSe quantum dots by employing simple successive ion layer adsorp...
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| Veröffentlicht in: | Journal of power sources 2014, Vol.248, p.439-446 |
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| creator | RAJ, C. Justin KARTHICK, S. N PARK, Songyi HEMALATHA, K. V KIM, Soo-Kyoung PRABAKAR, K KIM, Hee-Je |
| description | Single crystalline zinc oxide (ZnO) nanorod array has been used for the fabrication of CdSe/CdS/PbS/ZnO quantum dot sensitized solar cell (QDSSC). The ZnO nanorod array photoanodes are sensitized with consecutive layer of PbS, CdS and CdSe quantum dots by employing simple successive ion layer adsorption and reaction (SILAR) and chemical bath deposition (CBD) techniques. The performances of the QDSSCs are examined in detail using polysulfide electrolyte with copper sulfide (CuS) counter electrode. The combination of two successive layers of PbS with CdSe/CdS/ZnO shows an improved short circuit current density (12.223 mA cm super(-2)) with a maximum power to conversion efficiency of 2.352% under 1 sun illumination. This enhancement is mainly attributed due to the better light harvesting ability of the PbS quantum dots and make large accumulation of photo-injected electrons in the conduction band of ZnO, and CdSe/CdS layers lower the recombination of photo-injected electrons with the electrolyte, these are well evidenced with the photovoltaic studies and electrochemical impedance spectroscopy. |
| doi_str_mv | 10.1016/j.jpowsour.2013.09.076 |
| format | Article |
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Justin ; KARTHICK, S. N ; PARK, Songyi ; HEMALATHA, K. V ; KIM, Soo-Kyoung ; PRABAKAR, K ; KIM, Hee-Je</creator><creatorcontrib>RAJ, C. Justin ; KARTHICK, S. N ; PARK, Songyi ; HEMALATHA, K. V ; KIM, Soo-Kyoung ; PRABAKAR, K ; KIM, Hee-Je</creatorcontrib><description>Single crystalline zinc oxide (ZnO) nanorod array has been used for the fabrication of CdSe/CdS/PbS/ZnO quantum dot sensitized solar cell (QDSSC). The ZnO nanorod array photoanodes are sensitized with consecutive layer of PbS, CdS and CdSe quantum dots by employing simple successive ion layer adsorption and reaction (SILAR) and chemical bath deposition (CBD) techniques. The performances of the QDSSCs are examined in detail using polysulfide electrolyte with copper sulfide (CuS) counter electrode. The combination of two successive layers of PbS with CdSe/CdS/ZnO shows an improved short circuit current density (12.223 mA cm super(-2)) with a maximum power to conversion efficiency of 2.352% under 1 sun illumination. This enhancement is mainly attributed due to the better light harvesting ability of the PbS quantum dots and make large accumulation of photo-injected electrons in the conduction band of ZnO, and CdSe/CdS layers lower the recombination of photo-injected electrons with the electrolyte, these are well evidenced with the photovoltaic studies and electrochemical impedance spectroscopy.</description><identifier>ISSN: 0378-7753</identifier><identifier>EISSN: 1873-2755</identifier><identifier>DOI: 10.1016/j.jpowsour.2013.09.076</identifier><identifier>CODEN: JPSODZ</identifier><language>eng</language><publisher>Amsterdam: Elsevier</publisher><subject>Applied sciences ; Arrays ; Cadmium selenides ; CADMIUM SULFIDE ; Cadmium sulfides ; Energy ; Exact sciences and technology ; INTERMETALLIC COMPOUNDS ; Intermetallics ; LEAD SULFIDE ; Natural energy ; Photovoltaic cells ; Photovoltaic conversion ; Quantum dots ; ROD ; SELENIDES ; SINGLE CRYSTALS ; Solar cells ; Solar cells. 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The combination of two successive layers of PbS with CdSe/CdS/ZnO shows an improved short circuit current density (12.223 mA cm super(-2)) with a maximum power to conversion efficiency of 2.352% under 1 sun illumination. This enhancement is mainly attributed due to the better light harvesting ability of the PbS quantum dots and make large accumulation of photo-injected electrons in the conduction band of ZnO, and CdSe/CdS layers lower the recombination of photo-injected electrons with the electrolyte, these are well evidenced with the photovoltaic studies and electrochemical impedance spectroscopy.</description><subject>Applied sciences</subject><subject>Arrays</subject><subject>Cadmium selenides</subject><subject>CADMIUM SULFIDE</subject><subject>Cadmium sulfides</subject><subject>Energy</subject><subject>Exact sciences and technology</subject><subject>INTERMETALLIC COMPOUNDS</subject><subject>Intermetallics</subject><subject>LEAD SULFIDE</subject><subject>Natural energy</subject><subject>Photovoltaic cells</subject><subject>Photovoltaic conversion</subject><subject>Quantum dots</subject><subject>ROD</subject><subject>SELENIDES</subject><subject>SINGLE CRYSTALS</subject><subject>Solar cells</subject><subject>Solar cells. 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Justin</au><au>KARTHICK, S. N</au><au>PARK, Songyi</au><au>HEMALATHA, K. V</au><au>KIM, Soo-Kyoung</au><au>PRABAKAR, K</au><au>KIM, Hee-Je</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Improved photovoltaic performance of CdSe/CdS/PbS quantum dot sensitized ZnO nanorod array solar cell</atitle><jtitle>Journal of power sources</jtitle><date>2014</date><risdate>2014</risdate><volume>248</volume><spage>439</spage><epage>446</epage><pages>439-446</pages><issn>0378-7753</issn><eissn>1873-2755</eissn><coden>JPSODZ</coden><abstract>Single crystalline zinc oxide (ZnO) nanorod array has been used for the fabrication of CdSe/CdS/PbS/ZnO quantum dot sensitized solar cell (QDSSC). The ZnO nanorod array photoanodes are sensitized with consecutive layer of PbS, CdS and CdSe quantum dots by employing simple successive ion layer adsorption and reaction (SILAR) and chemical bath deposition (CBD) techniques. 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| subjects | Applied sciences Arrays Cadmium selenides CADMIUM SULFIDE Cadmium sulfides Energy Exact sciences and technology INTERMETALLIC COMPOUNDS Intermetallics LEAD SULFIDE Natural energy Photovoltaic cells Photovoltaic conversion Quantum dots ROD SELENIDES SINGLE CRYSTALS Solar cells Solar cells. Photoelectrochemical cells Solar energy SULFIDES ZINC OXIDE |
| title | Improved photovoltaic performance of CdSe/CdS/PbS quantum dot sensitized ZnO nanorod array solar cell |
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