RETRACTED: Advances in colloidal quantum dot solar cells: The depleted-heterojunction device

Illan J. Kramer, Andras G. Pattantyus-Abraham, Aaron R. Barkhouse, Xihua Wang, Gerasimos Konstantatos, Ratan Debnath, Larissa Levina, Ines Raabe, Md. K. Nazeeruddin, Michael Grätzel, Edward H. Sargent

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


Colloidal quantum dot (CQD) photovoltaics combine low-cost solution processibility with quantum size-effect tunability to match absorption with the solar spectrum. Recent advances in CQD photovoltaics have led to 3.6% AM1.5 solar power conversion efficiencies. Here we report CQD photovoltaic devices on transparent conductive oxides and show that our devices rely on the establishment of a depletion region for field-driven charge transport and separation. The resultant depleted-heterojunction solar cells provide a 5.1% AM1.5 power conversion efficiency. The devices employ infrared-bandgap size-effect-tuned PbS colloidal quantum dots, enabling broadband harvesting of the solar spectrum. © 2010 Elsevier B.V.
Original languageEnglish (US)
Pages (from-to)7351-7355
Number of pages5
JournalThin Solid Films
Issue number21
StatePublished - Aug 2011
Externally publishedYes

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledged KAUST grant number(s): KUS-I1-009-21
Acknowledgements: This publication is based in part on work supported by Award No. KUS-I1-009-21, made by King Abdullah University of Science and Technology (KAUST). The authors would also like to acknowledge the assistance of L Brzozowski, S. Huang, K. Kemp, G. Koleilat, J. Tang, E. Palmiano, R. Wolowiec, and D. Jamaskosmanovic. MG and MKN thank the Korea Foundation for International Cooperation of Science and Technology through the Global Research Lab. (GRL) Program funded by the Ministry of Education, Science and Technology, Republic of Korea.
This publication acknowledges KAUST support, but has no KAUST affiliated authors.


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