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Depleted-Heterojunction Colloidal Quantum Dot Solar Cells Employing Low-Cost Metal Contacts

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Abstract

We present a solar cell architecture that simultaneously accentuates the benefits of lead chalcogenide colloidal quantum dots while addressing their shortcomings. The resulting 3-dimensional heterojunction exhibits over 5% power conversion efficiency. We further show that gold contacts can be replaced with far less expensive nickel contacts without compromising performance.

© 2010 Optical Society of America

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