Uniform Low-to-High In Composition InGaN Layers Grown on Si

作者：Aseev Pavel^*; Soto Rodriguez Paul E D; Kumar Praveen; Gomez Victor J; Alvi Naveed ul Hassan; Manuel Jose M; Morales Francisco M; Jimenez Juan J; Garcia Rafael; Calleja Enrique; Noetzel Richard

来源：Applied Physics Express, 2013, 6(11): 115503.

DOI：10.7567/APEX.6.115503

Uniform, compact, and thick InGaN layers are grown on Si(111) substrates by plasma-assisted molecular beam epitaxy without any buffer layers at low temperatures of around 320 degrees C. By adjusting the Ga/In flux ratio, InGaN layers with In compositions between 10 and 33% are obtained, providing emission covering the whole visible spectral range. The In composition varies less than 2% over large areas, and the single-crystalline hexagonal InGaN layers have a well-defined epitaxial relationship with the Si substrate. Photoluminescence is observed up to room temperature, opening the prospect for the direct integration of InGaN light-emitting devices with Si technology.

• 出版日期2013-11