Materials interface engineering for solution-processed photovoltaics

Michael Graetzel, René A. J. Janssen, David B. Mitzi, Edward H. Sargent

Research output: Contribution to journalArticlepeer-review

814 Scopus citations

Abstract

Advances in solar photovoltaics are urgently needed to increase the performance and reduce the cost of harvesting solar power. Solution-processed photovoltaics are cost-effective to manufacture and offer the potential for physical flexibility. Rapid progress in their development has increased their solar-power conversion efficiencies. The nanometre (electron) and micrometre (photon) scale interfaces between the crystalline domains that make up solution-processed solar cells are crucial for efficient charge transport. These interfaces include large surface area junctions between photoelectron donors and acceptors, the intralayer grain boundaries within the absorber, and the interfaces between photoactive layers and the top and bottom contacts. Controlling the collection and minimizing the trapping of charge carriers at these boundaries is crucial to efficiency. © 2012 Macmillan Publishers Limited. All rights reserved.
Original languageEnglish (US)
Pages (from-to)304-312
Number of pages9
JournalNature
Volume488
Issue number7411
DOIs
StatePublished - Aug 16 2012
Externally publishedYes

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