Hybrid Growth Modes of PbSe Nanocrystals with Oriented Attachment and Grain Boundary Migration
Abstract The growth of nanocrystals has widely been researched recently through an in situ high‐resolution transmission electron microscopy technique, which reveals the process of morphological and structural evolutions. For nanocrystals, the underlying growth modes are mostly determined by growth e...
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| Format: | Article |
| Language: | English |
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Wiley
2019-05-01
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| Series: | Advanced Science |
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| Online Access: | https://doi.org/10.1002/advs.201802202 |
| _version_ | 1797742424063213568 |
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| author | Feng Cheng Linyuan Lian Luying Li Jiangyu Rao Chen Li Tianyu Qi Zhi Zhang Jianbing Zhang Yihua Gao |
| author_facet | Feng Cheng Linyuan Lian Luying Li Jiangyu Rao Chen Li Tianyu Qi Zhi Zhang Jianbing Zhang Yihua Gao |
| author_sort | Feng Cheng |
| collection | DOAJ |
| description | Abstract The growth of nanocrystals has widely been researched recently through an in situ high‐resolution transmission electron microscopy technique, which reveals the process of morphological and structural evolutions. For nanocrystals, the underlying growth modes are mostly determined by growth environment and crystal morphology. Here, the direct growth process of the PbSe nanocrystals via controlling the temperature is clearly observed. The results show that the PbSe nanocrystals start growth following oriented attachment growth mode, and then change to growth with grain boundary migration at moderate temperature as the heat activated nanocrystals gather together with decreased degree of freedom for crystal rotation. During the grain boundary migration, the smaller nanocrystals are inclined to be assimilated by larger ones through interfacial atom reconfigurations, which are observed to take place through strain mediated atom migration. The growth mode changes in different growth states with a hybrid growth mode of oriented attachment and grain boundary migration during the whole growth process. |
| first_indexed | 2024-03-12T14:40:40Z |
| format | Article |
| id | doaj.art-06fe45c86ba24977a1a6dfcba2dafdb2 |
| institution | Directory Open Access Journal |
| issn | 2198-3844 |
| language | English |
| last_indexed | 2024-03-12T14:40:40Z |
| publishDate | 2019-05-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advanced Science |
| spelling | doaj.art-06fe45c86ba24977a1a6dfcba2dafdb22023-08-16T08:41:29ZengWileyAdvanced Science2198-38442019-05-0169n/an/a10.1002/advs.201802202Hybrid Growth Modes of PbSe Nanocrystals with Oriented Attachment and Grain Boundary MigrationFeng Cheng0Linyuan Lian1Luying Li2Jiangyu Rao3Chen Li4Tianyu Qi5Zhi Zhang6Jianbing Zhang7Yihua Gao8Center for Nanoscale Characterization & Devices Wuhan National Laboratory for Optoelectronics Huazhong University of Science and Technology 1037 Luoyu Road Wuhan Hubei 430074 ChinaEngineering Research Center for Functional Ceramics Ministry of Education, School of Optical and Electronic Information Huazhong University of Science and Technology 1037 Luoyu Road Wuhan Hubei 430074 ChinaCenter for Nanoscale Characterization & Devices Wuhan National Laboratory for Optoelectronics Huazhong University of Science and Technology 1037 Luoyu Road Wuhan Hubei 430074 ChinaCenter for Nanoscale Characterization & Devices Wuhan National Laboratory for Optoelectronics Huazhong University of Science and Technology 1037 Luoyu Road Wuhan Hubei 430074 ChinaCenter for Nanoscale Characterization & Devices Wuhan National Laboratory for Optoelectronics Huazhong University of Science and Technology 1037 Luoyu Road Wuhan Hubei 430074 ChinaCenter for Nanoscale Characterization & Devices Wuhan National Laboratory for Optoelectronics Huazhong University of Science and Technology 1037 Luoyu Road Wuhan Hubei 430074 ChinaSchool of Physics Huazhong University of Science and Technology 1037 Luoyu Road Wuhan Hubei 430074 ChinaEngineering Research Center for Functional Ceramics Ministry of Education, School of Optical and Electronic Information Huazhong University of Science and Technology 1037 Luoyu Road Wuhan Hubei 430074 ChinaSchool of Physics Huazhong University of Science and Technology 1037 Luoyu Road Wuhan Hubei 430074 ChinaAbstract The growth of nanocrystals has widely been researched recently through an in situ high‐resolution transmission electron microscopy technique, which reveals the process of morphological and structural evolutions. For nanocrystals, the underlying growth modes are mostly determined by growth environment and crystal morphology. Here, the direct growth process of the PbSe nanocrystals via controlling the temperature is clearly observed. The results show that the PbSe nanocrystals start growth following oriented attachment growth mode, and then change to growth with grain boundary migration at moderate temperature as the heat activated nanocrystals gather together with decreased degree of freedom for crystal rotation. During the grain boundary migration, the smaller nanocrystals are inclined to be assimilated by larger ones through interfacial atom reconfigurations, which are observed to take place through strain mediated atom migration. The growth mode changes in different growth states with a hybrid growth mode of oriented attachment and grain boundary migration during the whole growth process.https://doi.org/10.1002/advs.201802202atoms reconfigurationgrain boundary migrationoriented attachmentPbSe nanocrystals |
| spellingShingle | Feng Cheng Linyuan Lian Luying Li Jiangyu Rao Chen Li Tianyu Qi Zhi Zhang Jianbing Zhang Yihua Gao Hybrid Growth Modes of PbSe Nanocrystals with Oriented Attachment and Grain Boundary Migration Advanced Science atoms reconfiguration grain boundary migration oriented attachment PbSe nanocrystals |
| title | Hybrid Growth Modes of PbSe Nanocrystals with Oriented Attachment and Grain Boundary Migration |
| title_full | Hybrid Growth Modes of PbSe Nanocrystals with Oriented Attachment and Grain Boundary Migration |
| title_fullStr | Hybrid Growth Modes of PbSe Nanocrystals with Oriented Attachment and Grain Boundary Migration |
| title_full_unstemmed | Hybrid Growth Modes of PbSe Nanocrystals with Oriented Attachment and Grain Boundary Migration |
| title_short | Hybrid Growth Modes of PbSe Nanocrystals with Oriented Attachment and Grain Boundary Migration |
| title_sort | hybrid growth modes of pbse nanocrystals with oriented attachment and grain boundary migration |
| topic | atoms reconfiguration grain boundary migration oriented attachment PbSe nanocrystals |
| url | https://doi.org/10.1002/advs.201802202 |
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