Colloidal quantum dots (QDs) are promising luminescent materials for display and lighting, but their stability has long been an issue. Here, we designed a passivation strategy of doping Ti ions into the shell of alloyed CdZnSeS@ZnS QDs. The results showed that Ti ions were successfully doped into the ZnS shell and the stability of QDs was improved. In the aging test, the Ti ions doped QDs maintained 51.4 of the initial performance after 90 h of aging, while the pristine QDs decreased to less than 25 of the initial value. In addition, we discuss the reasons why Ti ions doping improves the stability of QDs. Ti ions are found to form Ti-S bonds in the ZnS shell, which has high binding energy and strong oxidation resistance. Most importantly, since there is no external physical insulating coating, the optimized QDs can also be directly used in electroluminescent devices, showing great potential in electroluminescence applications.
Название публикации (dc.title) | Enhancing the stability of environmental resistance of alloyed CdZnSeS@ZnS quantum dots by doping Ti ions into shell layer |
Автор/ы (dc.contributor.yazarlar) | Fan Fang, Haochen Liu, Zuoliang Wen, Chenxi Liu, Bing Xu, Zhikuan Zhang, Kai Wang, Mehmet Ertugrul, Wei Lei, Xiao Wei Sun |
Вид публикации (dc.type) | Makale |
Язык (dc.language) | İngilizce |
Год публикации (dc.date.issued) | 2022 |
Национальный/Международный (dc.identifier.ulusaluluslararasi) | Uluslararası |
Источник (dc.relation.journal) | Nanotechnology |
Номер (dc.identifier.issue) | 50 |
Том/№ (dc.identifier.volume) | 33 |
Страница (dc.identifier.startpage) | Article Number: 505602 |
ISSN/ISBN (dc.identifier.issn) | ISSN: 0957-4484; Online ISSN: 1361-6528 |
Издатель (dc.publisher) | IOP Publishing |
Базы данных (dc.contributor.veritaban) | Web of Science Core Collection |
Базы данных (dc.contributor.veritaban) | IOP Science |
Базы данных (dc.contributor.veritaban) | Scopus |
Вид индекса (dc.identifier.index) | SCI Expanded |
Вид индекса (dc.identifier.index) | Scopus |
Импакт-фактор (dc.identifier.etkifaktoru) | 3,953 / 2021-WOS / 5 Year: 3,598 |
Резюме (dc.description.abstract) | Colloidal quantum dots (QDs) are promising luminescent materials for display and lighting, but their stability has long been an issue. Here, we designed a passivation strategy of doping Ti ions into the shell of alloyed CdZnSeS@ZnS QDs. The results showed that Ti ions were successfully doped into the ZnS shell and the stability of QDs was improved. In the aging test, the Ti ions doped QDs maintained 51.4 of the initial performance after 90 h of aging, while the pristine QDs decreased to less than 25 of the initial value. In addition, we discuss the reasons why Ti ions doping improves the stability of QDs. Ti ions are found to form Ti-S bonds in the ZnS shell, which has high binding energy and strong oxidation resistance. Most importantly, since there is no external physical insulating coating, the optimized QDs can also be directly used in electroluminescent devices, showing great potential in electroluminescence applications. |
URL (dc.rights) | https://iopscience.iop.org/article/10.1088/1361-6528/ac923c |
DOI (dc.identifier.doi) | 10.1088/1361-6528/ac923c |
Факультет / Институт (dc.identifier.fakulte) | Mühendislik Fakültesi |
Кафедра (dc.identifier.bolum) | Elektrik-Elektronik Mühendisliği Bölümü |
Автор(ы) в учреждении (dc.contributor.author) | Mehmet ERTUĞRUL |
№ регистрации (dc.identifier.kayitno) | BL04292B89 |
Дата регистрации (dc.date.available) | 2022-10-21 |
Заметка (Год публикации) (dc.identifier.notyayinyili) | December 2022 |
Wos No (dc.identifier.wos) | WOS:000863492800001 |
Тематический рубрикатор (dc.subject) | quantum dots |
Тематический рубрикатор (dc.subject) | CdZnSeS@ZnS |
Тематический рубрикатор (dc.subject) | Ti ions doping |
Тематический рубрикатор (dc.subject) | stability |
Тематический рубрикатор (dc.subject) | oxidation resistance |