کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1543515 1512837 2008 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Organic light sources look forward to optimize the photosynthesis process
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
Organic light sources look forward to optimize the photosynthesis process
چکیده انگلیسی

We introduce a series of organic LEDs that exploit the monomer and excimer emissions from single phosphor dopant emitters. These organic LEDs were found to be effective in the simultaneous creation of blue and red emission bands essential for plant growth. By varying the concentration of novel phosphorescent dopants selected from a series of newly synthesized platinum complexes [PtL22–25Cl], we have manufactured the blue-biased LEDs [with the Commission Internationale de L’Eclairage (CIE) coordinates (x, y) (0.27, 0.37)] and the red-biased LEDs [CIE coordinates (0.53, 0.38)], at a high luminance of ≈500 cd/m2 and with external electroluminescence (EL) quantum efficiency of 15–18% photon/electron (→ power efficiency 8–12 lm/W). The EL spectrum most suitable for the action spectrum of photosynthesis yield was that of a device incorporating 20 wt.% content of [PtL23Cl]. This LED yielded photosynthetic photon flux (PPF) approaching 10 μmol s−1 W−1 of the electrical power, a value which significantly exceeds that for the professional lamps used commonly for horticultural lighting.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Photonics and Nanostructures - Fundamentals and Applications - Volume 6, Issues 3–4, December 2008, Pages 225–230
نویسندگان
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