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Adv Mater. 2014 Jul 16;26(27):4741-7. doi: 10.1002/adma.201400297. Epub 2014 Jun 4.

Remote trap passivation in colloidal quantum dot bulk nano-heterojunctions and its effect in solution-processed solar cells.

Author information

1
ICFO - Institut de Ciéncies Fotóniques, Mediterranean Technology Park, Av. Carl Friedrich Gauss, 3, 08860, Castelldefels, Barcelona, Spain; CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, 411008, India.

Abstract

More-efficient charge collection and suppressed trap recombination in colloidal quantum dot (CQD) solar cells is achieved by means of a bulk nano-heterojunction (BNH) structure, in which p-type and n-type materials are blended on the nanometer scale. The improved performance of the BNH devices, compared with that of bilayer devices, is displayed in higher photocurrents and higher open-circuit voltages (resulting from a trap passivation mechanism).

KEYWORDS:

bulk nano-heterojunctions; colloidal quantum dots; recombination; solar cells; trap states

PMID:
24895324
DOI:
10.1002/adma.201400297
[Indexed for MEDLINE]

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