Figure 2.

Photoresponse of the quantum ring solar cell and current density voltage characteristics of solar cells. (a) Photoresponse of the quantum ring solar cell at 300 K. (b) Current density voltage characteristics of a quantum ring solar cell (QRSC) and a quantum well solar cell (QWSC).

Wu et al. Nanoscale Research Letters 2013 8:5   doi:10.1186/1556-276X-8-5
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