Air-stable and efficient inorganic-organic heterojunction solar cells using PbS colloidal quantum dots co-capped by 1-dodecanethiol and oleic acid

Sungwoo Kim; Sang Hyuk Im; Meejae Kang; Jin Hyuck Heo; Sang Il Seok; Sang Wook Kim; Iván Mora-Seró; Juan Bisquert

doi:10.1039/c2cp43223d

Air-stable and efficient inorganic-organic heterojunction solar cells using PbS colloidal quantum dots co-capped by 1-dodecanethiol and oleic acid

Sungwoo Kim, Sang Hyuk Im, Meejae Kang, Jin Hyuck Heo, Sang Il Seok, Sang Wook Kim, Iván Mora-Seró, Juan Bisquert

Research output: Contribution to journal › Article › peer-review

34 Citations (Scopus)

Abstract

PbS colloidal quantum dot (CQD)-sensitized inorganic-organic heterojunction solar cells fabricated by using the PbS CQDs co-capped by the oleic acid (OA) and 1-dodecanethiol (DT) ligand showed better device stability with aging time under ambient conditions without encapsulation. Furthermore, the device performance is better than the cell fabricated from PbS CQDs without DT ligand. The enhancement of performance in OA and DT co-capped systems is investigated by impedance spectroscopy. An upward displacement of the TiO ₂ conduction band, with a consequent increase of V _oc, results in the improved performance when CQD with DT are employed. This journal is

Original language	English
Pages (from-to)	14999-15002
Number of pages	4
Journal	Physical Chemistry Chemical Physics
Volume	14
Issue number	43
DOIs	https://doi.org/10.1039/c2cp43223d
Publication status	Published - 2012 Nov 21
Externally published	Yes

ASJC Scopus subject areas

General Physics and Astronomy
Physical and Theoretical Chemistry

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10.1039/c2cp43223d

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abstract = "PbS colloidal quantum dot (CQD)-sensitized inorganic-organic heterojunction solar cells fabricated by using the PbS CQDs co-capped by the oleic acid (OA) and 1-dodecanethiol (DT) ligand showed better device stability with aging time under ambient conditions without encapsulation. Furthermore, the device performance is better than the cell fabricated from PbS CQDs without DT ligand. The enhancement of performance in OA and DT co-capped systems is investigated by impedance spectroscopy. An upward displacement of the TiO 2 conduction band, with a consequent increase of V oc, results in the improved performance when CQD with DT are employed. This journal is",

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AU - Kim, Sungwoo

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AU - Kang, Meejae

AU - Heo, Jin Hyuck

AU - Seok, Sang Il

AU - Kim, Sang Wook

AU - Mora-Seró, Iván

AU - Bisquert, Juan

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Air-stable and efficient inorganic-organic heterojunction solar cells using PbS colloidal quantum dots co-capped by 1-dodecanethiol and oleic acid

Abstract

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