Effects of bifunctional linker on the optical properties of ZnO nanocolumn-linker-CdSe quantum dots heterostructure

Tsung Wei Zeng; I. Shuo Liu; Kuo Tung Huang; Hsuieh Chung Liao; Chih Tao Chien; Daniel Kwan Pang Wong; Chun Wei Chen; Jih Jen Wu; Yang Fang Chen; Wei Fang Su

doi:10.1016/j.jcis.2011.03.002

Effects of bifunctional linker on the optical properties of ZnO nanocolumn-linker-CdSe quantum dots heterostructure

Tsung Wei Zeng, I. Shuo Liu, Kuo Tung Huang, Hsuieh Chung Liao, Chih Tao Chien, Daniel Kwan Pang Wong, Chun Wei Chen, Jih Jen Wu, Yang Fang Chen, Wei Fang Su

Department of Chemical Engineering

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

17 Citations (Scopus)

Abstract

We study the effects of bifunctional linker on the optical properties of ZnO nanocolumn-linker-CdSe quantum dots heterostructure. The CdSe quantum dots are anchored on the surface of ZnO nanocolumns through either aliphatic linker of 3-aminopropyl trimethoxysilane (APS) or aromatic linker of p-aminophenyl trimethoxysilane (APhS). X-ray photoelectron spectroscopy is used to confirm the bifunctional linker bound onto CdSe quantum dots and onto the ZnO nanocolumns. The TEM study reveals a CdSe quantum dot shell of about 15. nm coated on the ZnO nanocolumns. The photoluminance (PL) spectroscopy and time-resolved PL spectroscopy of ZnO nanocolumn-linker-CdSe quantum dots reflects that the photo-induced electron transfer across the interface of ZnO and CdSe through the aromatic APhS is more efficient than the aliphatic APS. This study demonstrates that through the usage of appropriate surface linker, the charge transfer rate across the interfaces of donor/acceptor (D/A) heterostructure can be improved for potential photovoltaic cell applications.

Original language	English
Pages (from-to)	323-328
Number of pages	6
Journal	Journal of Colloid And Interface Science
Volume	358
Issue number	2
DOIs	https://doi.org/10.1016/j.jcis.2011.03.002
Publication status	Published - 2011 Jun 15

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Biomaterials
Surfaces, Coatings and Films
Colloid and Surface Chemistry

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10.1016/j.jcis.2011.03.002

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@article{d169b07461b54d0487e4541ffd2a46dd,

title = "Effects of bifunctional linker on the optical properties of ZnO nanocolumn-linker-CdSe quantum dots heterostructure",

abstract = "We study the effects of bifunctional linker on the optical properties of ZnO nanocolumn-linker-CdSe quantum dots heterostructure. The CdSe quantum dots are anchored on the surface of ZnO nanocolumns through either aliphatic linker of 3-aminopropyl trimethoxysilane (APS) or aromatic linker of p-aminophenyl trimethoxysilane (APhS). X-ray photoelectron spectroscopy is used to confirm the bifunctional linker bound onto CdSe quantum dots and onto the ZnO nanocolumns. The TEM study reveals a CdSe quantum dot shell of about 15. nm coated on the ZnO nanocolumns. The photoluminance (PL) spectroscopy and time-resolved PL spectroscopy of ZnO nanocolumn-linker-CdSe quantum dots reflects that the photo-induced electron transfer across the interface of ZnO and CdSe through the aromatic APhS is more efficient than the aliphatic APS. This study demonstrates that through the usage of appropriate surface linker, the charge transfer rate across the interfaces of donor/acceptor (D/A) heterostructure can be improved for potential photovoltaic cell applications.",

author = "Zeng, {Tsung Wei} and Liu, {I. Shuo} and Huang, {Kuo Tung} and Liao, {Hsuieh Chung} and Chien, {Chih Tao} and Wong, {Daniel Kwan Pang} and Chen, {Chun Wei} and Wu, {Jih Jen} and Chen, {Yang Fang} and Su, {Wei Fang}",

note = "Funding Information: The authors thank the National Science Council of Republic of China (NSC 98-3114-E-002-001, 98-2218-E-002-002, 98-2001-INER-050) and the US Air Force Office of Scientific Research (AOARD-07-4014) for financial support of this research.",

year = "2011",

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doi = "10.1016/j.jcis.2011.03.002",

language = "English",

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journal = "Journal of Colloid and Interface Science",

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AU - Zeng, Tsung Wei

AU - Liu, I. Shuo

AU - Huang, Kuo Tung

AU - Liao, Hsuieh Chung

AU - Chien, Chih Tao

AU - Wong, Daniel Kwan Pang

AU - Chen, Chun Wei

AU - Wu, Jih Jen

AU - Chen, Yang Fang

AU - Su, Wei Fang

N1 - Funding Information: The authors thank the National Science Council of Republic of China (NSC 98-3114-E-002-001, 98-2218-E-002-002, 98-2001-INER-050) and the US Air Force Office of Scientific Research (AOARD-07-4014) for financial support of this research.

PY - 2011/6/15

Y1 - 2011/6/15

N2 - We study the effects of bifunctional linker on the optical properties of ZnO nanocolumn-linker-CdSe quantum dots heterostructure. The CdSe quantum dots are anchored on the surface of ZnO nanocolumns through either aliphatic linker of 3-aminopropyl trimethoxysilane (APS) or aromatic linker of p-aminophenyl trimethoxysilane (APhS). X-ray photoelectron spectroscopy is used to confirm the bifunctional linker bound onto CdSe quantum dots and onto the ZnO nanocolumns. The TEM study reveals a CdSe quantum dot shell of about 15. nm coated on the ZnO nanocolumns. The photoluminance (PL) spectroscopy and time-resolved PL spectroscopy of ZnO nanocolumn-linker-CdSe quantum dots reflects that the photo-induced electron transfer across the interface of ZnO and CdSe through the aromatic APhS is more efficient than the aliphatic APS. This study demonstrates that through the usage of appropriate surface linker, the charge transfer rate across the interfaces of donor/acceptor (D/A) heterostructure can be improved for potential photovoltaic cell applications.

AB - We study the effects of bifunctional linker on the optical properties of ZnO nanocolumn-linker-CdSe quantum dots heterostructure. The CdSe quantum dots are anchored on the surface of ZnO nanocolumns through either aliphatic linker of 3-aminopropyl trimethoxysilane (APS) or aromatic linker of p-aminophenyl trimethoxysilane (APhS). X-ray photoelectron spectroscopy is used to confirm the bifunctional linker bound onto CdSe quantum dots and onto the ZnO nanocolumns. The TEM study reveals a CdSe quantum dot shell of about 15. nm coated on the ZnO nanocolumns. The photoluminance (PL) spectroscopy and time-resolved PL spectroscopy of ZnO nanocolumn-linker-CdSe quantum dots reflects that the photo-induced electron transfer across the interface of ZnO and CdSe through the aromatic APhS is more efficient than the aliphatic APS. This study demonstrates that through the usage of appropriate surface linker, the charge transfer rate across the interfaces of donor/acceptor (D/A) heterostructure can be improved for potential photovoltaic cell applications.

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Effects of bifunctional linker on the optical properties of ZnO nanocolumn-linker-CdSe quantum dots heterostructure

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