2010
DOI: 10.1063/1.3367706
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Synthesis and photovoltaic effect of vertically aligned ZnO/ZnS core/shell nanowire arrays

Abstract: A vertically aligned ZnO/ZnS core/shell nanowire array with type II band alignment was directly synthesized on an indium-tin-oxide glass substrate and the photovoltaic effect of the nanowire array was investigated. The epitaxial relationship, wurtzite (0001) matching zinc-blende (111), was observed in the ZnO/ZnS nano-heterostructure. ZnS coating is found to quench the photoluminescence of ZnO nanowires but enhance the photocurrent with faster response in the photovoltaic device, indicating improvement in char… Show more

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Cited by 138 publications
(98 citation statements)
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“…The need for higher solar cell effi ciencies at lower cost has become apparent, and at the same time, synthetic control in nanoscience has been improved, making the existence of high-performance electronic devices possible [69][70][71][72]. Functioning nanowire PVs have been fabricated using a wide variety of materials including silicon, germanium, zinc oxide, zinc sulfi de, cadmium telluride, cadmium selenide, copper oxide, titanium oxide, gallium nitride, indium gallium nitride, gallium arsenide, indium arsenide, and many polymer/nanowire combinations [73][74][75][76][77][78][79][80][81][82][83][84][85][86]. Output effi ciencies have steadily increased, so that most of the material systems achieved effi ciencies higher than 1% with some close to 10%, but a number of unresolved questions must be answered before such materials can be used in commercial devices.…”
Section: Organic Solar Cells and Nanowire Solar Cellsmentioning
confidence: 99%
“…The need for higher solar cell effi ciencies at lower cost has become apparent, and at the same time, synthetic control in nanoscience has been improved, making the existence of high-performance electronic devices possible [69][70][71][72]. Functioning nanowire PVs have been fabricated using a wide variety of materials including silicon, germanium, zinc oxide, zinc sulfi de, cadmium telluride, cadmium selenide, copper oxide, titanium oxide, gallium nitride, indium gallium nitride, gallium arsenide, indium arsenide, and many polymer/nanowire combinations [73][74][75][76][77][78][79][80][81][82][83][84][85][86]. Output effi ciencies have steadily increased, so that most of the material systems achieved effi ciencies higher than 1% with some close to 10%, but a number of unresolved questions must be answered before such materials can be used in commercial devices.…”
Section: Organic Solar Cells and Nanowire Solar Cellsmentioning
confidence: 99%
“…Many studies have been made from worldwide research groups in type-II coaxial nanowire growth and photovoltaic applications [52][53][54][55][56][57][58]. Zhang's group fabricated the vertically aligned ZnO/ZnSe and ZnO/ZnS core/shell NWAs by CVD method [42,59], and investigated the photovoltaic effect of the ZnO/ZnS NWA. Lee's group synthesized ZnO/ZnSe heterostructure NWAs with different morphologies through solutionbased surface modifications [54,55].…”
Section: Fabrication Of Type-ii Core/shell Nanowire-based Solar Cellsmentioning
confidence: 99%
“…Both the ZnO/ZnS and CdSe/ZnTe core-shell nanowires which have type II alignment exhibit an efficient broad band UV/visible photoresponse. 132,133 The piezoelectric effect of ZnO and CdSe makes the two types of core-shell structures excellent candidates for piezo-phototronic effect devices. Fig.…”
Section: Three-dimensional Core-shell Nanowire Array Photodetectormentioning
confidence: 99%