Depleted-heterojunction colloidal quantum dot photovoltaics employing low-cost electrical contacts
- 12 July 2010
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 97 (2) , 023109
- https://doi.org/10.1063/1.3463037
Abstract
With an aim to reduce the cost of depleted-heterojunction colloidalquantum dotsolar cells, we describe herein a strategy that replaces costly Au with a low-cost Ni-based Ohmic contact. The resultant devices achieve 3.5% Air Mass 1.5 power conversion efficiency. Only by incorporating a 1.2-nm-thick LiF layer between the PbSquantum dot film and Ni, we were able to prevent undesired reactions and degradation at the metal-semiconductor interface.Keywords
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