p-i-n Heterojunction solar cells with a colloidal quantum-dot absorber layer.

Ko, Dong-Kyun; Brown, Patrick R; Bawendi, Moungi G; Bulović, Vladimir · Adv Mater · 2014

basic_science · Level V

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Abstract

A quantum-dot (QD) p-i-n heterojunction solar cell with an increased depletion region is demonstrated by depleting the QD layer from both the front and back junctions. Due to a combination of improved charged extraction and increased light absorption, a 120% increase in the short-circuit current is achieved compared with that of conventional ZnO/QD devices.