Self-assembled, nanowire network electrodes for depleted bulk heterojunction solar cells.

Lan, Xinzheng; Bai, Jing; Masala, Silvia; Thon, Susanna M; Ren, Yuan; Kramer, Illan J; Hoogland, Sjoerd; Simchi, Arash et al. · Adv Mater · 2013

basic_science · Level V

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Abstract

Herein, a solution-processed, bottom-up-fabricated, nanowire network electrode is developed. This electrode features a ZnO template which is converted into locally connected, infiltratable, TiO2 nanowires. This new electrode is used to build a depleted bulk heterojunction solar cell employing hybrid-passivated colloidal quantum dots. The new electrode allows the application of a thicker, and thus more light-absorbing, colloidal quantum dot active layer, from which charge extraction of an efficiency comparable to that obtained from a thinner, planar device could be obtained.