Quantum-dot-sensitized solar cells fabricated by the combined process of the direct attachment of colloidal CdSe quantum dots having a ZnS glue layer and spray pyrolysis deposition

Sang Hyuk Im; Yong Hui Lee; Sang Il Seok; Sung Woo Kim; Sang Wook Kim

doi:10.1021/la1034382

Quantum-dot-sensitized solar cells fabricated by the combined process of the direct attachment of colloidal CdSe quantum dots having a ZnS glue layer and spray pyrolysis deposition

Sang Hyuk Im, Yong Hui Lee, Sang Il Seok, Sung Woo Kim, Sang Wook Kim

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

50 Citations (Scopus)

Abstract

We were able to attach CdSe quantum dots (QDs) having a ZnS inorganic glue layer directly to a mesoporous TiO₂ (mp-TiO₂) surface by spray coating and thermal annealing. Quantum-dot-sensitized solar cells based on CdSe QDs having ZnS as the inorganic glue layer could easily transport generated charge carriers because of the intimate bonding between CdSe and mp-TiO₂. The application of spray pyrolysis deposition (SPD) to obtain additional CdSe layers improved the performance characteristics to V _oc = 0.45 V, J_sc = 10.7 mA/cm², fill factor = 35.8%, and power conversion efficiency = 1.7%. Furthermore, ZnS post-treatment improved the device performance to V_oc = 0.57 V, J_sc = 11.2 mA/cm², fill factor = 35.4%, and power conversion efficiency = 2.2%.

Original language	English
Pages (from-to)	18576-18580
Number of pages	5
Journal	Langmuir
Volume	26
Issue number	23
DOIs	https://doi.org/10.1021/la1034382
Publication status	Published - 2010 Dec 7
Externally published	Yes

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Surfaces and Interfaces
Spectroscopy
Electrochemistry

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10.1021/la1034382

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title = "Quantum-dot-sensitized solar cells fabricated by the combined process of the direct attachment of colloidal CdSe quantum dots having a ZnS glue layer and spray pyrolysis deposition",

abstract = "We were able to attach CdSe quantum dots (QDs) having a ZnS inorganic glue layer directly to a mesoporous TiO2 (mp-TiO2) surface by spray coating and thermal annealing. Quantum-dot-sensitized solar cells based on CdSe QDs having ZnS as the inorganic glue layer could easily transport generated charge carriers because of the intimate bonding between CdSe and mp-TiO2. The application of spray pyrolysis deposition (SPD) to obtain additional CdSe layers improved the performance characteristics to V oc = 0.45 V, Jsc = 10.7 mA/cm2, fill factor = 35.8\%, and power conversion efficiency = 1.7\%. Furthermore, ZnS post-treatment improved the device performance to Voc = 0.57 V, Jsc = 11.2 mA/cm2, fill factor = 35.4\%, and power conversion efficiency = 2.2\%.",

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doi = "10.1021/la1034382",

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T1 - Quantum-dot-sensitized solar cells fabricated by the combined process of the direct attachment of colloidal CdSe quantum dots having a ZnS glue layer and spray pyrolysis deposition

AU - Im, Sang Hyuk

AU - Lee, Yong Hui

AU - Seok, Sang Il

AU - Kim, Sung Woo

AU - Kim, Sang Wook

PY - 2010/12/7

Y1 - 2010/12/7

N2 - We were able to attach CdSe quantum dots (QDs) having a ZnS inorganic glue layer directly to a mesoporous TiO2 (mp-TiO2) surface by spray coating and thermal annealing. Quantum-dot-sensitized solar cells based on CdSe QDs having ZnS as the inorganic glue layer could easily transport generated charge carriers because of the intimate bonding between CdSe and mp-TiO2. The application of spray pyrolysis deposition (SPD) to obtain additional CdSe layers improved the performance characteristics to V oc = 0.45 V, Jsc = 10.7 mA/cm2, fill factor = 35.8%, and power conversion efficiency = 1.7%. Furthermore, ZnS post-treatment improved the device performance to Voc = 0.57 V, Jsc = 11.2 mA/cm2, fill factor = 35.4%, and power conversion efficiency = 2.2%.

AB - We were able to attach CdSe quantum dots (QDs) having a ZnS inorganic glue layer directly to a mesoporous TiO2 (mp-TiO2) surface by spray coating and thermal annealing. Quantum-dot-sensitized solar cells based on CdSe QDs having ZnS as the inorganic glue layer could easily transport generated charge carriers because of the intimate bonding between CdSe and mp-TiO2. The application of spray pyrolysis deposition (SPD) to obtain additional CdSe layers improved the performance characteristics to V oc = 0.45 V, Jsc = 10.7 mA/cm2, fill factor = 35.8%, and power conversion efficiency = 1.7%. Furthermore, ZnS post-treatment improved the device performance to Voc = 0.57 V, Jsc = 11.2 mA/cm2, fill factor = 35.4%, and power conversion efficiency = 2.2%.

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Quantum-dot-sensitized solar cells fabricated by the combined process of the direct attachment of colloidal CdSe quantum dots having a ZnS glue layer and spray pyrolysis deposition

Abstract

ASJC Scopus subject areas

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