Efficient spray-coated colloidal quantum dot solar cells

Kramer, Illan J.; Minor, James C.; Moreno-Bautista, Gabriel; Rollny, Lisa R.; Kanjanaboos, Pongsakorn; Kopilovic, Damir; Thon, Susanna; Carey, Graham H.; Chou, Kang Wei; Zhitomirsky, David; Amassian, Aram; Sargent, E. H.

Abstract

(Figure Presented). A colloidal quantum dot solar cell is fabricated by spray-coating under ambient conditions. By developing a room-temperature spray-coating technique and implementing a fully automated process with near monolayer control - an approach termed as sprayLD - an electronic defect is eliminated resulting in solar cell performance and statistical distribution superior to prior batch-processed methods along with a hero performance of 8.1%.

Sponsors

The authors would like to thank Ikeuchi USA for useful discussions on the appropriate nozzles to use for our materials and solvents. This research is supported in part by the IBM Canada Research and Development Center. This publication is based in part on work supported by Award KUS-11-009-21, made by King Abdullah University of Science and Technology (KAUST). AA is supported by the Career Development SABIC Chair. The EM research described in this paper was performed at the Canadian Centre for Electron Microscopy, which is supported by NSERC and other government agencies. Research described in this paper was performed at the Canadian Light Source, which is funded by the Canada Foundation for Innovation, the Natural Sciences and Engineering Research Council of Canada, the National Research Council Canada, the Canadian Institutes of Health Research, the Government of Saskatchewan, Western Economic Diversification Canada, and the University of Saskatchewan. The authors acknowledge the technical assistance and scientific guidance of C. Y. Kim.

Publisher

Wiley-Blackwell

Journal

Advanced Materials

ISSN

09359648