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<p id="cite"><span class="journalname">Nature Materials</span> <br />Published online: 5 July 2009 | <span class="doi"><abbr title="Digital Object Identifier">doi</abbr>:10.1038/nmat2493</span></p><p id="errorcor"></p><h2 id="atl">Three-dimensional nanopillar-array photovoltaics on low-cost and flexible substrates</h2><p id="aug">Zhiyong Fan<sup><a title="affiliated with " href="#a1">1</a>,</sup><sup><a title="affiliated with " href="#a2">2</a>,</sup><sup><a title="affiliated with " href="#a3">3</a></sup>,
Haleh Razavi<sup><a title="affiliated with " href="#a1">1</a>,</sup><sup><a title="affiliated with " href="#a2">2</a>,</sup><sup><a title="affiliated with " href="#a3">3</a></sup>,
Jae-won Do<sup><a title="affiliated with " href="#a1">1</a>,</sup><sup><a title="affiliated with " href="#a2">2</a>,</sup><sup><a title="affiliated with " href="#a3">3</a></sup>,
Aimee Moriwaki<sup><a title="affiliated with " href="#a1">1</a>,</sup><sup><a title="affiliated with " href="#a2">2</a>,</sup><sup><a title="affiliated with " href="#a3">3</a></sup>,
Onur Ergen<sup><a title="affiliated with " href="#a1">1</a>,</sup><sup><a title="affiliated with " href="#a2">2</a>,</sup><sup><a title="affiliated with " href="#a3">3</a></sup>,
Yu-Lun Chueh<sup><a title="affiliated with " href="#a1">1</a>,</sup><sup><a title="affiliated with " href="#a2">2</a>,</sup><sup><a title="affiliated with " href="#a3">3</a></sup>,
Paul W. Leu<sup><a title="affiliated with " href="#a1">1</a>,</sup><sup><a title="affiliated with " href="#a2">2</a>,</sup><sup><a title="affiliated with " href="#a3">3</a></sup>,
Johnny C. Ho<sup><a title="affiliated with " href="#a1">1</a>,</sup><sup><a title="affiliated with " href="#a2">2</a>,</sup><sup><a title="affiliated with " href="#a3">3</a></sup>,
Toshitake Takahashi<sup><a title="affiliated with " href="#a1">1</a>,</sup><sup><a title="affiliated with " href="#a2">2</a>,</sup><sup><a title="affiliated with " href="#a3">3</a></sup>,
Lothar A. Reichertz<sup><a title="affiliated with " href="#a2">2</a></sup>,
Steven Neale<sup><a title="affiliated with " href="#a1">1</a>,</sup><sup><a title="affiliated with " href="#a3">3</a></sup>,
Kyoungsik Yu<sup><a title="affiliated with " href="#a1">1</a>,</sup><sup><a title="affiliated with " href="#a3">3</a></sup>,
Ming Wu<sup><a title="affiliated with " href="#a1">1</a>,</sup><sup><a title="affiliated with " href="#a3">3</a></sup>,
Joel W. Ager<sup><a title="affiliated with " href="#a2">2</a></sup>
&
Ali Javey<sup><a title="affiliated with " href="#a1">1</a>,</sup><sup><a title="affiliated with " href="#a2">2</a>,</sup><sup><a title="affiliated with " href="#a3">3</a></sup></p><p class="caff"/><div id="abs"><a href="#top" class="backtotop">Top<span class="hidden"> of page</span></a><p class="lead">Solar energy represents one of the most abundant and yet least harvested sources of renewable energy. In recent years, tremendous progress has been made in developing photovoltaics that can be potentially mass deployed<sup><a href="/nmat/journal/vaop/ncurrent/full/nmat2493.html#B1">1, </a></sup><sup><a href="/nmat/journal/vaop/ncurrent/full/nmat2493.html#B2">2, </a></sup><sup><a href="/nmat/journal/vaop/ncurrent/full/nmat2493.html#B3">3</a></sup>. Of particular interest to cost-effective solar cells is to use novel device structures and materials processing for enabling acceptable efficiencies<sup><a href="/nmat/journal/vaop/ncurrent/full/nmat2493.html#B4">4, </a></sup><sup><a href="/nmat/journal/vaop/ncurrent/full/nmat2493.html#B5">5, </a></sup><sup><a href="/nmat/journal/vaop/ncurrent/full/nmat2493.html#B6">6</a></sup>. In this regard, here, we report the direct growth of highly regular, single-crystalline nanopillar arrays of optically active semiconductors on aluminium substrates that are then configured as solar-cell modules. As an example, we demonstrate a photovoltaic structure that incorporates three-dimensional, single-crystalline <i>n</i>-CdS nanopillars, embedded in polycrystalline thin films of <i>p</i>-CdTe, to enable high absorption of light and efficient collection of the carriers. Through experiments and modelling, we demonstrate the potency of this approach for enabling highly versatile solar modules on both rigid and flexible substrates with enhanced carrier collection efficiency arising from the geometric configuration of the nanopillars.</p></div><a href="#top" class="backtotop">Top<span class="hidden"> of page</span></a><hr class="separator" />
<div id="affiliations-notes" class="aff-bottom">
<ol class="decimal"><li id="a1">
Department of Electrical Engineering and Computer Sciences, University of California at Berkeley, Berkeley, California 94720, USA
</li><li id="a2">
Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720,
USA
</li><li id="a3">
Berkeley Sensor and Actuator Center, University of California at Berkeley,
Berkeley, California 94720, USA
</li></ol><p class="caff">Correspondence to: Ali Javey<sup><a title="affiliated with " href="#a1">1</a>,</sup><sup><a title="affiliated with " href="#a2">2</a>,</sup><sup><a title="affiliated with " href="#a3">3</a></sup>
e-mail: <a href="mailto:ajavey@eecs.berkeley.edu">ajavey@eecs.berkeley.edu</a>
</p></div><br/><br/></div>
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var wt = {};
wt['DCS.dcsuri'] = this.pathname ? this.pathname.indexOf('/') !== 0 ? '/' + this.pathname : this.pathname : '/';
wt['DCS.dcsqry'] = this.search ? this.search.substring(1) : '';
wt['WT.ti'] = 'Download:' + (this.hostname ? this.hostname.split(':')[0] : '') + wt['DCS.dcsuri'] + (wt['DCS.dcsqry'] ? '?' + wt['DCS.dcsqry'] : '');
wt['WT.dl'] = '20';
applyParams(wt);
});
}
});
$('div[class*="adunit-"] a').bind('click', function() {
var classes = $(this).parents('div[class*="adunit-"]:first').attr('class');
if (classes) {
var match = /(^|\s)adunit-([^\s]+)/.exec(classes);
_tag.dcsMultiTrack('WT.ac', (match) ? match[2] : '');
}
});
});
})(jQuery);
//--><!]]></script>
<!-- end webtrends Version: 8.6.0 -->
</body></html>
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