|
ИСТИНА |
Войти в систему Регистрация |
ИСТИНА ИНХС РАН |
||
Insight into the performance of multi-color InGaN/GaN nanorod light emitting diodesстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 16 января 2019 г.
- Авторы: Robin Y., Bae S.Y., Shubina T.V., Pristovsek M., Evropeitsev E.A., Kirilenko D.A., Davydov V.Yu, Smirnov A.N., Toropov A.A., Jmerik V.N., Kushimoto M., Nitta S., Ivanov S.V., Amano H.
- Журнал: Scientific reports
- Том: 8
- Номер: 1
- Год издания: 2018
- Издательство: Nature Publishing Group
- Местоположение издательства: United Kingdom
- Первая страница: 1
- Последняя страница: 8
- DOI: 10.1038/s41598-018-25473-x
- Аннотация: We report on the thorough investigation of light emitting diodes (LEDs) made of core-shell nanorods (NRs) with InGaN/GaN quantum wells (QWs) in the outer shell, which are grown on patterned substrates by metal-organic vapor phase epitaxy. The multi-bands emission of the LEDs covers nearly the whole visible region, including UV, blue, green, and orange ranges. The intensity of each emission is strongly dependent on the current density, however the LEDs demonstrate a rather low color saturation. Based on transmission electron microscopy data and comparing them with electroluminescence and photoluminescence spectra measured at different excitation powers and temperatures, we could identify the spatial origination of each of the emission bands. We show that their wavelengths and intensities are governed by different thicknesses of the QWs grown on different crystal facets of the NRs as well as corresponding polarization-induced electric fields. Also the InGaN incorporation strongly varies along the NRs, increasing at their tips and corners, which provides the red shift of emission. With increasing the current, the different QW regions are activated successively from the NR tips to the side-walls, resulting in different LED colors. Our findings can be used as a guideline to design effectively emitting multi-color NR-LEDs.
- Добавил в систему: Шубина Татьяна Васильевна