کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7840527 1505866 2018 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
On the origin of white light emission from nanostructured silicon carbonitride thin films
ترجمه فارسی عنوان
بر مبنای انتشار نور سفید از نانوساختار کربن سیلیکون نازک فیلم نازک
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
چکیده انگلیسی
The effects of thermal annealing on the visible luminescence of hydrogenated silicon carbonitride (SiCxNy:Hz) thin films were investigated. Thin films of a-SiC1.2N0.7:H1.4 were grown using electron cyclotron resonance plasma enhanced chemical vapor deposition and subsequently were annealed between 400 and 1200 °C for 1 h in nitrogen gas. The samples exhibited a broad luminescence band, covering the visible range with two dominant peaks at ~ 470 and 550 nm, which appeared “white” to the naked eye. This white light emission could be deconvoluted into four photoluminescence (PL) bands. To understand the origin of PL from this complex material, two fairly well-studied submatrices, SiC:H1.3 and SiN1.3:H0.3, were also investigated. Our findings showed that the intensity of the PL emission of a-SiC1.2N0.7:H1.4 was higher than that of the binary matrices and was achieved at an optimized annealing temperature of 500 °C. Carbon-related silicon defect centers were suggested as the sources of the luminescence of the a-SiCxNy:Hz thin films. The observed visible emission was strongly correlated with different Si-C bonding configurations.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volume 196, April 2018, Pages 504-510
نویسندگان
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