کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1640978 1517207 2016 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Investigation of microstructural and optical properties of (K,Ba)(Ni,Nb)O3−δ thin films fabricated by pulsed laser deposition
ترجمه فارسی عنوان
بررسی خواص میکروساختار و اپتیکهای فیلمهای نازک (K، Ba) (Ni، Nb) O3-δ ساخته شده با رسوب لیزر پالسی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
چکیده انگلیسی


• Well-crystallized KBNNO thin film was first prepared by a modified PLD method.
• Near-stoichiometric KBNNO film possesses a pseudo-cubic perovskite structure.
• Nanometer-sized regular and uniformly distributed grains shown in KBNNO SEM image.
• The optical behavior of KBNNO film was assessed for potential solar application.

Perovskite-type ferroelectrics are increasingly being studied for applications in solar-energy conversion because of their efficient ferroelectric polarization-driven carrier separation and above-bandgap generated photovoltages. (K,Ba)(Ni,Nb)O3−δ ferroelectric films, a highly promising and low-cost absorber layer material for solar cells, have been fabricated on Pt(111)/Ti/SiO2/Si(100) substrates for the first time, using a modified pulsed laser deposition method. Well-crystallized near-stoichiometric (K,Ba)(Ni,Nb)O3−δ film was obtained by adjusting the target–substrate distance to 50 mm and setting the substrate at an oblique angle of ~11° from the plume axis. Microstructural characterizations show the as-grown film exhibits a single-phase perovskite structure with a dense and uniform surface. The optical absorption spectrum of (K,Ba)(Ni,Nb)O3−δ has two main peaks, i.e., a significant peak at the intermediate energy adjacent to a much larger peak at higher photon energy, which indicates intraband multiple electronic transition. The present results could be crucial for potential solar-energy device applications.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Letters - Volume 181, 15 October 2016, Pages 178–181
نویسندگان
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