Figure 1From: Improvement of performance of InAs quantum dot solar cell by inserting thin AlAs layers AFM images of device surfaces. (a) With as-grown InAs QDs and without AlAs layers (sample A), (b) with as-grown InAs QDs and AlAs layers (sample B), (c) with annealed InAs QDs and without AlAs layers (sample C), and (d) with annealed InAs QDs and AlAs layers (sample D).Back to article page