Materials Map

Discover the materials research landscape. Find experts, partners, networks.

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The Materials Map is an open tool for improving networking and interdisciplinary exchange within materials research. It enables cross-database search for cooperation and network partners and discovering of the research landscape.

The dashboard provides detailed information about the selected scientist, e.g. publications. The dashboard can be filtered and shows the relationship to co-authors in different diagrams. In addition, a link is provided to find contact information.

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Materials Map under construction

The Materials Map is still under development. In its current state, it is only based on one single data source and, thus, incomplete and contains duplicates. We are working on incorporating new open data sources like ORCID to improve the quality and the timeliness of our data. We will update Materials Map as soon as possible and kindly ask for your patience.

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in Cooperation with on an Cooperation-Score of 37%

Topics

Publications (4/4 displayed)

  • 2021Fully transparent metal organic chemical vapor deposition-grown cascaded InGaN micro-light-emitting diodes with independent junction control12citations
  • 2021Functionalized Nanocellulose/Multiwalled Carbon Nanotube Composites for Electrochemical Applications27citations
  • 2020Development of efficient semipolar InGaN long wavelength light-emitting diodes and blue laser diodes grown on a high quality semipolar GaN/sapphire template8citations
  • 2019Anti-oxidative and UV-absorbing biohybrid film of cellulose nanofibrils and tannin extract97citations

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Chart of shared publication
Lynsky, Cheyenne
1 / 1 shared
Iza, Mike
1 / 2 shared
Qwah, Kai Shek
1 / 2 shared
Speck, James S.
1 / 16 shared
Nakamura, Shuji
2 / 15 shared
Zhang, Haojun
2 / 2 shared
Denbaars, Steven P.
1 / 9 shared
Yao, Yifan
1 / 5 shared
Kontturi, Katri S.
1 / 5 shared
Durairaj, Vasuki
1 / 4 shared
Liljeström, Touko
1 / 3 shared
Etula, Jarkko
1 / 20 shared
Tammelin, Tekla
1 / 26 shared
Wester, Niklas
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Laurila, Tomi
1 / 96 shared
Koskinen, Jari
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Leppänen, Ilona
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Ge, Yanling
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Klamkin, Jonathan
1 / 1 shared
Denbaars, Steven, P.
1 / 2 shared
Li, Hongjian
1 / 3 shared
Wong, Matthew, S.
1 / 2 shared
Speck, James, S.
1 / 3 shared
Demierry, Philippe
1 / 1 shared
Chao Chow, Yi
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Pinna, Sergio
1 / 1 shared
Sirviö, Juho Antti
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Haapala, Antti
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Liimatainen, Henrikki
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Khakalo, Alexey
1 / 14 shared
Chart of publication period
2021
2020
2019

Co-Authors (by relevance)

  • Lynsky, Cheyenne
  • Iza, Mike
  • Qwah, Kai Shek
  • Speck, James S.
  • Nakamura, Shuji
  • Zhang, Haojun
  • Denbaars, Steven P.
  • Yao, Yifan
  • Kontturi, Katri S.
  • Durairaj, Vasuki
  • Liljeström, Touko
  • Etula, Jarkko
  • Tammelin, Tekla
  • Wester, Niklas
  • Laurila, Tomi
  • Koskinen, Jari
  • Leppänen, Ilona
  • Ge, Yanling
  • Klamkin, Jonathan
  • Denbaars, Steven, P.
  • Li, Hongjian
  • Wong, Matthew, S.
  • Speck, James, S.
  • Demierry, Philippe
  • Chao Chow, Yi
  • Pinna, Sergio
  • Sirviö, Juho Antti
  • Haapala, Antti
  • Liimatainen, Henrikki
  • Khakalo, Alexey
OrganizationsLocationPeople

article

Fully transparent metal organic chemical vapor deposition-grown cascaded InGaN micro-light-emitting diodes with independent junction control

  • Lynsky, Cheyenne
  • Iza, Mike
  • Qwah, Kai Shek
  • Speck, James S.
  • Nakamura, Shuji
  • Zhang, Haojun
  • Denbaars, Steven P.
  • Li, Panpan
  • Yao, Yifan
Abstract

<jats:p>In this work, we present fully transparent metal organic chemical vapor deposition (MOCVD)-grown InGaN cascaded micro-light-emitting diodes (µLEDs) with independent junction control. The cascaded µLEDs consisted of a blue emitting diode, a tunnel junction (TJ), a green emitting diode, and a TJ, without using any conductive oxide layer. We can control the injection of carriers into blue, green, and blue/green junctions in the same device independently, which show high optical and electrical performance. The forward voltage (V<jats:sub>f</jats:sub>) at 20 A/cm<jats:sup>2</jats:sup> for the TJ blue µLEDs and TJ green µLEDs is 4.06 and 3.13 V, respectively. These results demonstrate the efficient TJs and fully activated p-type GaN in the cascaded µLEDs. Such demonstration shows the important application of TJs for the integration of µLEDs with multiple color emissions.</jats:p>

Topics
  • impedance spectroscopy
  • chemical vapor deposition