Overcoming the Ambient Manufacturability-Scalability-Performance Bottleneck in Colloidal Quantum Dot Photovoltaics

Ahmad R. Kirmani; Arif D. Sheikh; Muhammad R. Niazi; Md Azimul Haque; Mengxia Liu; F. Pelayo García de Arquer; Jixian Xu; Bin Sun; Oleksandr Voznyy; Nicola Gasparini; Derya Baran; Tom Wu; Edward H. Sargent; Aram Amassian

doi:10.1002/adma.201801661

Overcoming the Ambient Manufacturability-Scalability-Performance Bottleneck in Colloidal Quantum Dot Photovoltaics

Ahmad R. Kirmani, Arif D. Sheikh, Muhammad R. Niazi, Md Azimul Haque, Mengxia Liu, F. Pelayo García de Arquer, Jixian Xu, Bin Sun, Oleksandr Voznyy, Nicola Gasparini, Derya Baran, Tom Wu, Edward H. Sargent, Aram Amassian^*

^*Corresponding author for this work

Chemistry

Research output: Contribution to journal › Article › peer-review

90 Scopus citations

Abstract

Colloidal quantum dot (CQD) solar cells have risen rapidly in performance; however, their low-cost fabrication under realistic ambient conditions remains elusive. This study uncovers that humid environments curtail the power conversion efficiency (PCE) of solar cells by preventing the needed oxygen doping of the hole transporter during ambient fabrication. A simple oxygen-doping step enabling ambient manufacturing irrespective of seasonal humidity variations is devised. Solar cells with PCE > 10% are printed under high humidity at industrially viable speeds. The devices use a tiny fraction of the ink typically needed and are air stable over a year. The humidity-resilient fabrication of efficient CQD solar cells breaks a long-standing compromise, which should accelerate commercialization.

Original language	English (US)
Article number	1801661
Journal	Advanced Materials
Volume	30
Issue number	35
DOIs	https://doi.org/10.1002/adma.201801661
State	Published - Aug 29 2018

Funding

This work was funded by the King Abdullah University of Science and Technology (KAUST) and the Ontario Research Fund Research Excellence Program. A.R.K. would like to acknowledge Dr. Lee J. Richter at the National Institute of Standards and Technology, Maryland, US for fruitful discussions. M.L. acknowledges support from the Hatch Research Scholarship.

Keywords

blade coating
colloidal quantum dots
humidity
oxygen doping
solar cells

ASJC Scopus subject areas

General Materials Science
Mechanics of Materials
Mechanical Engineering

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10.1002/adma.201801661

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Kirmani, A. R., Sheikh, A. D., Niazi, M. R., Haque, M. A., Liu, M., de Arquer, F. P. G., Xu, J., Sun, B., Voznyy, O., Gasparini, N., Baran, D., Wu, T., Sargent, E. H., & Amassian, A. (2018). Overcoming the Ambient Manufacturability-Scalability-Performance Bottleneck in Colloidal Quantum Dot Photovoltaics. Advanced Materials, 30(35), Article 1801661. https://doi.org/10.1002/adma.201801661

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abstract = "Colloidal quantum dot (CQD) solar cells have risen rapidly in performance; however, their low-cost fabrication under realistic ambient conditions remains elusive. This study uncovers that humid environments curtail the power conversion efficiency (PCE) of solar cells by preventing the needed oxygen doping of the hole transporter during ambient fabrication. A simple oxygen-doping step enabling ambient manufacturing irrespective of seasonal humidity variations is devised. Solar cells with PCE > 10% are printed under high humidity at industrially viable speeds. The devices use a tiny fraction of the ink typically needed and are air stable over a year. The humidity-resilient fabrication of efficient CQD solar cells breaks a long-standing compromise, which should accelerate commercialization.",

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Overcoming the Ambient Manufacturability-Scalability-Performance Bottleneck in Colloidal Quantum Dot Photovoltaics

Abstract

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Keywords

ASJC Scopus subject areas

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