Efficient, air-stable colloidal quantum dot solar cells encapsulated using atomic layer deposition of a nanolaminate barrier

Ip, Alexander H.; Labelle, André J.; Sargent, Edward H.

Efficient, air-stable colloidal quantum dot solar cells encapsulated using atomic layer deposition of a nanolaminate barrier

Type

Article

Authors

Ip, Alexander H.
Labelle, André J.
Sargent, Edward H.

KAUST Grant Number

KUS-11-009-21

Date

2013-12-23

Abstract

Atomic layer deposition was used to encapsulate colloidal quantum dot solar cells. A nanolaminate layer consisting of alternating alumina and zirconia films provided a robust gas permeation barrier which prevented device performance degradation over a period of multiple weeks. Unencapsulated cells stored in ambient and nitrogen environments demonstrated significant performance losses over the same period. The encapsulated cell also exhibited stable performance under constant simulated solar illumination without filtration of harsh ultraviolet photons. This monolithically integrated thin film encapsulation method is promising for roll-to-roll processed high efficiency nanocrystal solar cells. © 2013 AIP Publishing LLC.

Citation

Ip AH, Labelle AJ, Sargent EH (2013) Efficient, air-stable colloidal quantum dot solar cells encapsulated using atomic layer deposition of a nanolaminate barrier. Applied Physics Letters 103: 263905. Available: http://dx.doi.org/10.1063/1.4858135.

Acknowledgements

This publication was based in part on work supported by Award KUS-11-009-21 made by King Abdullah University of Science and Technology (KAUST), by the Ontario Research Fund Research Excellence Program, and by the Natural Sciences and Engineering Research Council (NSERC) of Canada. The authors thank P. Maraghechi, R. Wolowiec, and D. Kopilovic for their help during the course of the study.