Ultra-small PbSe Quantum Dots Synthesis by Chemical Nucleation Controlling
Ultra-small PbSe quantum dots (QDs) were synthesized using conventional hot-injection method. A small amount of Sn was used as a nucleation promotion agent to control nucleation and growth during the QDs synthesis process. The average diameter of the QDs is about 1.6 nm, of which absorption peak cen...
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| Veröffentlicht in: | Journal of Wuhan University of Technology. Materials science edition 2021-08, Vol.36 (4), p.478-483 |
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| container_title | Journal of Wuhan University of Technology. Materials science edition |
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| creator | Cheng, Fangliang Yu, Miao Jia, Linyuan Tian, Qihang Zhang, Jihong Kim, Bokhyeon Zhao, Xiujian |
| description | Ultra-small PbSe quantum dots (QDs) were synthesized using conventional hot-injection method. A small amount of Sn was used as a nucleation promotion agent to control nucleation and growth during the QDs synthesis process. The average diameter of the QDs is about 1.6 nm, of which absorption peak centers at 550 nm and photoluminescence peak centers at 750 nm under 350 nm laser excitation with power as low as 500 µW. Transmission electron microscopy images confirm that the QDs size well matches with the calculated diameter from Brus equation. This match and electron energy loss spectroscopy analysis proves that Sn is not involved into the final structure of the ultra-small PbSe QDs. An ion-exchange process was proposed for the nucleation control and ultra-small QDs synthesis. The prepared ultra-small QDs could be a promising candidate for luminescence, solar cell devices, and others. |
| doi_str_mv | 10.1007/s11595-021-2433-7 |
| format | Article |
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A small amount of Sn was used as a nucleation promotion agent to control nucleation and growth during the QDs synthesis process. The average diameter of the QDs is about 1.6 nm, of which absorption peak centers at 550 nm and photoluminescence peak centers at 750 nm under 350 nm laser excitation with power as low as 500 µW. Transmission electron microscopy images confirm that the QDs size well matches with the calculated diameter from Brus equation. This match and electron energy loss spectroscopy analysis proves that Sn is not involved into the final structure of the ultra-small PbSe QDs. An ion-exchange process was proposed for the nucleation control and ultra-small QDs synthesis. The prepared ultra-small QDs could be a promising candidate for luminescence, solar cell devices, and others.</description><identifier>ISSN: 1000-2413</identifier><identifier>EISSN: 1993-0437</identifier><identifier>DOI: 10.1007/s11595-021-2433-7</identifier><language>eng</language><publisher>Wuhan: Wuhan University of Technology</publisher><subject>Advanced Materials ; Chemical synthesis ; Chemistry and Materials Science ; Electron energy loss spectroscopy ; Energy dissipation ; Image transmission ; Ion exchange ; Lead selenides ; Materials Science ; Nucleation ; Photoluminescence ; Photovoltaic cells ; Quantum dots ; Solar cells</subject><ispartof>Journal of Wuhan University of Technology. 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Materials science edition</title><addtitle>J. Wuhan Univ. Technol.-Mat. Sci. Edit</addtitle><description>Ultra-small PbSe quantum dots (QDs) were synthesized using conventional hot-injection method. A small amount of Sn was used as a nucleation promotion agent to control nucleation and growth during the QDs synthesis process. The average diameter of the QDs is about 1.6 nm, of which absorption peak centers at 550 nm and photoluminescence peak centers at 750 nm under 350 nm laser excitation with power as low as 500 µW. Transmission electron microscopy images confirm that the QDs size well matches with the calculated diameter from Brus equation. This match and electron energy loss spectroscopy analysis proves that Sn is not involved into the final structure of the ultra-small PbSe QDs. An ion-exchange process was proposed for the nucleation control and ultra-small QDs synthesis. The prepared ultra-small QDs could be a promising candidate for luminescence, solar cell devices, and others.</description><subject>Advanced Materials</subject><subject>Chemical synthesis</subject><subject>Chemistry and Materials Science</subject><subject>Electron energy loss spectroscopy</subject><subject>Energy dissipation</subject><subject>Image transmission</subject><subject>Ion exchange</subject><subject>Lead selenides</subject><subject>Materials Science</subject><subject>Nucleation</subject><subject>Photoluminescence</subject><subject>Photovoltaic cells</subject><subject>Quantum dots</subject><subject>Solar cells</subject><issn>1000-2413</issn><issn>1993-0437</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><recordid>eNp1kMlqwzAURUVpoenwAd0Julb7ZA2Ol8WdCR1IsxaSLScOsp1K8iJ_XwUXuurqXXh3gIPQFYUbCpDfBkpFIQhklGScMZIfoRktCkaAs_w4aQBIH8pO0VkIWwAOTMoZel256DUJnXYOf5ilxZ-j7uPY4fshBrzc93FjQxuw2eNyY7u20g6_jZWzOrZDj8uhj35wru3XF-ik0S7Yy997jlaPD1_lM1m8P72UdwtSMSojmQutuaBcUsshb6xkFcu4qGVDDQNhRCEN5aIyRT0XWcWMNHMuoIailklIdo6up96dH75HG6LaDqPv06TKhJQgWJGL5KKTq_JDCN42aufbTvu9oqAOyNSETCVk6oBM5SmTTZmQvP3a-r_m_0M_xsVs6Q</recordid><startdate>20210801</startdate><enddate>20210801</enddate><creator>Cheng, Fangliang</creator><creator>Yu, Miao</creator><creator>Jia, Linyuan</creator><creator>Tian, Qihang</creator><creator>Zhang, Jihong</creator><creator>Kim, Bokhyeon</creator><creator>Zhao, Xiujian</creator><general>Wuhan University of Technology</general><general>Springer Nature B.V</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>20210801</creationdate><title>Ultra-small PbSe Quantum Dots Synthesis by Chemical Nucleation Controlling</title><author>Cheng, Fangliang ; Yu, Miao ; Jia, Linyuan ; Tian, Qihang ; Zhang, Jihong ; Kim, Bokhyeon ; Zhao, Xiujian</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c316t-85aa451461e407fe63c3245d6f1b305b596b145cb9d852c3b6b8450d09d684563</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><topic>Advanced Materials</topic><topic>Chemical synthesis</topic><topic>Chemistry and Materials Science</topic><topic>Electron energy loss spectroscopy</topic><topic>Energy dissipation</topic><topic>Image transmission</topic><topic>Ion exchange</topic><topic>Lead selenides</topic><topic>Materials Science</topic><topic>Nucleation</topic><topic>Photoluminescence</topic><topic>Photovoltaic cells</topic><topic>Quantum dots</topic><topic>Solar cells</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Cheng, Fangliang</creatorcontrib><creatorcontrib>Yu, Miao</creatorcontrib><creatorcontrib>Jia, Linyuan</creatorcontrib><creatorcontrib>Tian, Qihang</creatorcontrib><creatorcontrib>Zhang, Jihong</creatorcontrib><creatorcontrib>Kim, Bokhyeon</creatorcontrib><creatorcontrib>Zhao, Xiujian</creatorcontrib><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Journal of Wuhan University of Technology. Materials science edition</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Cheng, Fangliang</au><au>Yu, Miao</au><au>Jia, Linyuan</au><au>Tian, Qihang</au><au>Zhang, Jihong</au><au>Kim, Bokhyeon</au><au>Zhao, Xiujian</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Ultra-small PbSe Quantum Dots Synthesis by Chemical Nucleation Controlling</atitle><jtitle>Journal of Wuhan University of Technology. Materials science edition</jtitle><stitle>J. Wuhan Univ. Technol.-Mat. Sci. Edit</stitle><date>2021-08-01</date><risdate>2021</risdate><volume>36</volume><issue>4</issue><spage>478</spage><epage>483</epage><pages>478-483</pages><issn>1000-2413</issn><eissn>1993-0437</eissn><abstract>Ultra-small PbSe quantum dots (QDs) were synthesized using conventional hot-injection method. A small amount of Sn was used as a nucleation promotion agent to control nucleation and growth during the QDs synthesis process. The average diameter of the QDs is about 1.6 nm, of which absorption peak centers at 550 nm and photoluminescence peak centers at 750 nm under 350 nm laser excitation with power as low as 500 µW. Transmission electron microscopy images confirm that the QDs size well matches with the calculated diameter from Brus equation. This match and electron energy loss spectroscopy analysis proves that Sn is not involved into the final structure of the ultra-small PbSe QDs. An ion-exchange process was proposed for the nucleation control and ultra-small QDs synthesis. The prepared ultra-small QDs could be a promising candidate for luminescence, solar cell devices, and others.</abstract><cop>Wuhan</cop><pub>Wuhan University of Technology</pub><doi>10.1007/s11595-021-2433-7</doi><tpages>6</tpages></addata></record> |
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| subjects | Advanced Materials Chemical synthesis Chemistry and Materials Science Electron energy loss spectroscopy Energy dissipation Image transmission Ion exchange Lead selenides Materials Science Nucleation Photoluminescence Photovoltaic cells Quantum dots Solar cells |
| title | Ultra-small PbSe Quantum Dots Synthesis by Chemical Nucleation Controlling |
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