We have developed monolithic white light emitting diodes (LEDs) with a hybrid structure of planar c-planes and nano
size hexagonal pyramids. The white spectrum is composed of blue and yellow emissions from the InGaN multi quantum
wells (MQWs) on the planar c-planes and on the nano pyramids, respectively. The yellow emission is originated from
quantum wells, wires, and dots that are formed at the sides, edges, and tops of the nano-pyramids, respectively. As a
result, the emission peaks are different and the entire yellow spectrum is broad enough to make a white in combination
with a blue emission. The longer wavelength from the InGaN on nano-pyramids than the wavelength from the InGaN on
c-planes is explained by excess In supply from the dielectric selective growth mask. The color temperature is tuned from
3600K to 6400K by controlling the relative area ratio of c-plane and nano-pyramids.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.