Details

Autor(en) / Beteiligte

• Okamoto, Koichi
• Niki, Isamu
• Scherer, Axel
• Narukawa, Yukio
• Mukai, Takashi
• Kawakami, Yoichi

Titel

Surface plasmon enhanced spontaneous emission rate of InGaN ∕ GaN quantum wells probed by time-resolved photoluminescence spectroscopy

Ist Teil von

• Applied physics letters, 2005-08, Vol.87 (7), p.071102-071102-3

Ort / Verlag

American Institute of Physics

Erscheinungsjahr

2005

Quelle

AIP Journals Complete

Beschreibungen/Notizen

• We observed a 32-fold increase in the spontaneous emission rate of InGaN/GaN quantum well (QW) at 440 nm by employing surface plasmons (SPs) probed by time-resolved photoluminescence spectroscopy. We explore this remarkable enhancement of the emission rates and intensities resulting from the efficient energy transfer from electron-hole pair recombination in the QW to electron vibrations of SPs at the metal-coated surface of the semiconductor heterostructure. This QW-SP coupling is expected to lead to a new class of super bright and high-speed light-emitting diodes (LEDs) that offer realistic alternatives to conventional fluorescent tubes.