Temperature and power dependence of photoluminescence in PbS quantum dots nanoparticles
In this study, the synthesis and the effect of temperature and power excitation towards photoluminescence (PL) emission of colloidal PbS quantum dots (QDs) were reported. Water soluble PbS QDs capped with a mixture of 1-thioglycerol (TGL) and dithioglycerol (DTG) was synthesized via colloidal chemis...
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| Format: | Article |
| Language: | English |
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Penerbit Universiti Kebangsaan Malaysia
2019
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| Online Access: | http://journalarticle.ukm.my/13721/ http://journalarticle.ukm.my/13721/1/16%20Muhammad%20Safwan%20Zaini.pdf |
| _version_ | 1848813356193939456 |
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| author | Muhammad Safwan Zaini, Mazliana Ahmad Kamarudin, Liew, Josephine Ying Chyi Shahrul Ainliah Alang Ahmad, Abdul Rahman Mohmad, |
| author_facet | Muhammad Safwan Zaini, Mazliana Ahmad Kamarudin, Liew, Josephine Ying Chyi Shahrul Ainliah Alang Ahmad, Abdul Rahman Mohmad, |
| author_sort | Muhammad Safwan Zaini, |
| building | UKM Institutional Repository |
| collection | Online Access |
| description | In this study, the synthesis and the effect of temperature and power excitation towards photoluminescence (PL) emission of colloidal PbS quantum dots (QDs) were reported. Water soluble PbS QDs capped with a mixture of 1-thioglycerol (TGL) and dithioglycerol (DTG) was synthesized via colloidal chemistry method at room temperature. The PL emission of PbS QDs was investigated under temperature range from 10 K to 300 K and we found that the PL emission blue-shifted when the temperature is increased. From high resolution transmission electron microscopy (HRTEM), the average size of PbS core QDs is determined to be 6 nm and the integrated PL intensity (IPL) versus excitation power density shows the recombination of electrons and holes occur efficiently at low and high temperature for the PbS QDs. Full width half maximum (FWHM) shows a gradual broadening with the increasing temperature due to the interaction of charge carriers with phonons. |
| first_indexed | 2025-11-15T00:16:53Z |
| format | Article |
| id | oai:generic.eprints.org:13721 |
| institution | Universiti Kebangasaan Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T00:16:53Z |
| publishDate | 2019 |
| publisher | Penerbit Universiti Kebangsaan Malaysia |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | oai:generic.eprints.org:137212019-11-29T09:06:16Z http://journalarticle.ukm.my/13721/ Temperature and power dependence of photoluminescence in PbS quantum dots nanoparticles Muhammad Safwan Zaini, Mazliana Ahmad Kamarudin, Liew, Josephine Ying Chyi Shahrul Ainliah Alang Ahmad, Abdul Rahman Mohmad, In this study, the synthesis and the effect of temperature and power excitation towards photoluminescence (PL) emission of colloidal PbS quantum dots (QDs) were reported. Water soluble PbS QDs capped with a mixture of 1-thioglycerol (TGL) and dithioglycerol (DTG) was synthesized via colloidal chemistry method at room temperature. The PL emission of PbS QDs was investigated under temperature range from 10 K to 300 K and we found that the PL emission blue-shifted when the temperature is increased. From high resolution transmission electron microscopy (HRTEM), the average size of PbS core QDs is determined to be 6 nm and the integrated PL intensity (IPL) versus excitation power density shows the recombination of electrons and holes occur efficiently at low and high temperature for the PbS QDs. Full width half maximum (FWHM) shows a gradual broadening with the increasing temperature due to the interaction of charge carriers with phonons. Penerbit Universiti Kebangsaan Malaysia 2019-06 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/13721/1/16%20Muhammad%20Safwan%20Zaini.pdf Muhammad Safwan Zaini, and Mazliana Ahmad Kamarudin, and Liew, Josephine Ying Chyi and Shahrul Ainliah Alang Ahmad, and Abdul Rahman Mohmad, (2019) Temperature and power dependence of photoluminescence in PbS quantum dots nanoparticles. Sains Malaysiana, 48 (6). pp. 1281-1288. ISSN 0126-6039 http://www.ukm.my/jsm/malay_journals/jilid48bil6_2019/KandunganJilid48Bil6_2019.html |
| spellingShingle | Muhammad Safwan Zaini, Mazliana Ahmad Kamarudin, Liew, Josephine Ying Chyi Shahrul Ainliah Alang Ahmad, Abdul Rahman Mohmad, Temperature and power dependence of photoluminescence in PbS quantum dots nanoparticles |
| title | Temperature and power dependence of photoluminescence
in PbS quantum dots nanoparticles |
| title_full | Temperature and power dependence of photoluminescence
in PbS quantum dots nanoparticles |
| title_fullStr | Temperature and power dependence of photoluminescence
in PbS quantum dots nanoparticles |
| title_full_unstemmed | Temperature and power dependence of photoluminescence
in PbS quantum dots nanoparticles |
| title_short | Temperature and power dependence of photoluminescence
in PbS quantum dots nanoparticles |
| title_sort | temperature and power dependence of photoluminescence
in pbs quantum dots nanoparticles |
| url | http://journalarticle.ukm.my/13721/ http://journalarticle.ukm.my/13721/ http://journalarticle.ukm.my/13721/1/16%20Muhammad%20Safwan%20Zaini.pdf |