Tailoring Cu2-xTe quantum-dot-decorated ZnO nanoparticles for potential solar cell applications
Cu2-xTe QDs on ZnO nanoparticles were synthesized using a successive ionic layer absorption and reaction technique (SILAR) at room temperature. The as-synthesized QDs which were distributively deposited on ZnO nanoparticles surface were characterized by field emission scanning electron microscope (F...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
2014
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| Online Access: | http://www.scopus.com/inward/record.url?eid=2-s2.0-84898075477&partnerID=40&md5=9b3ad2d9dc7002d0d704074ed612407a http://cmuir.cmu.ac.th/handle/6653943832/4816 |
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| Institution: | Chiang Mai University |
| Language: | English |
| Summary: | Cu2-xTe QDs on ZnO nanoparticles were synthesized using a successive ionic layer absorption and reaction technique (SILAR) at room temperature. The as-synthesized QDs which were distributively deposited on ZnO nanoparticles surface were characterized by field emission scanning electron microscope (FE-SEM), X-ray diffraction and high-resolution transmittance microscope (HR-TEM). It revealed that the average diameter of the QDs was ∼2 nm. The synthesized Cu2-xTe QDs were solely orthorhombic Cu 1.44Te phase. The growth mechanism was supposed that it based on ions deposition. The energy gap of as-synthesized Cu2-xTe QDs was determined ∼1.1 eV and the smallest energy gap of 0.76 eV was obtained, equal to that of bulk material. Raman spectroscopy and FTIR were also used to study the Cu2-xTe QDs on ZnO nanoparticles. These characteristics suggest a promising implication for a potential broadband sensitizer of QDSCs. © 2014 Elsevier B.V. All rights reserved. |
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