发明名称 |
PHOTOVOLTAIC DEVICES WITH AN INTERFACIAL BAND-GAP MODIFYING STRUCTURE AND METHODS FOR FORMING THE SAME |
摘要 |
A Schottky-barrier-reducing layer is provided between a p-doped semiconductor layer and a transparent conductive material layer of a photovoltaic device. The Schottky-barrier-reducing layer can be a conductive material layer having a work function that is greater than the work function of the transparent conductive material layer. The conductive material layer can be a carbon-material layer such as a carbon nanotube layer or a graphene layer. Alternately, the conductive material layer can be another transparent conductive material layer having a greater work function than the transparent conductive material layer. The reduction of the Schottky barrier reduces the contact resistance across the transparent material layer and the p-doped semiconductor layer, thereby reducing the series resistance and increasing the efficiency of the photovoltaic device. |
申请公布号 |
US2016260859(A1) |
申请公布日期 |
2016.09.08 |
申请号 |
US201615156940 |
申请日期 |
2016.05.17 |
申请人 |
International Business Machines Corporation ;Egypt Nanotechnology Center |
发明人 |
Fogel Keith E.;Kim Jeehwan;Sadana Devendra K.;Tulevski George S.;Abou-Kandil Ahmed;Mohamed Hisham S.;Saad Mohamed;Tobail Osama |
分类号 |
H01L31/07;H01L31/028;H01L31/056;H01L31/0224 |
主分类号 |
H01L31/07 |
代理机构 |
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代理人 |
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主权项 |
1. A photovoltaic device comprising a stack, from one side to another side, of:
a transparent conductive material layer; a Schottky-barrier-reducing layer contacting said transparent conductive material layer, wherein said Schottky-barrier-reducing layer is an optically transparent layer including an allotrope of carbon; and a p-doped semiconductor layer, wherein a Schottky barrier across said stack has a lower contact resistance than a Schottky barrier across a comparative exemplary stack that includes all layers of said stack less said Schottky-barrier-reducing layer. |
地址 |
Armonk NY US |