A novel approach to the synthesis of photoluminescent germanium nanoparticles by reactive laser ablation

作者：Riabinina D^*; Durand C; Chaker M; Rowell N; Rosei F

来源：Nanotechnology, 2006, 17(9): 2152-2155.

DOI：10.1088/0957-4484/17/9/012

We propose a novel approach to the synthesis of photoluminescent Ge nanoparticles using reactive laser ablation. The deposition of germanium under low oxygen pressure ( 2 - 100 mTorr) yields Ge nanoparticles embedded in a Ge oxide matrix. Ge nanostructures were characterized by transmission electron microscopy, x-ray photoelectron spectroscopy and photoluminescence (PL) spectroscopy. The oxygen pressure determines the degree of oxidation of GeOx films ( 0 <= x <= 2). A strong PL signal depending on oxygen pressure was observed. The PL maximum is detected for 10 mTorr of oxygen corresponding to a nanoparticle size of 1.8 +/- 0.5 nm.

• 出版日期2006-5-14