{"product_id":"red-phosphors-for-w-led-applications-von-john-peter","title":"Red phosphors for W-LED applications","description":"\u003cp\u003eProject Report from the year 2015 in the subject Physics - Optics, ST Anne's College Of Engineering And Technology (St. Anne¿s College of Engineering and Technology, Panruti, Tamilnadu, India), language: English, abstract: Trivalent rare-earth-ion-activated molybdate based phosphors have attracted great attention for solid-state lighting applications by virtue of their long lifetimes, and efficient luminescence property. The rare-earth ions are represented by a partly filled 4f shell that is completely shielded by 5s2 and 5p6 orbitals. Therefore, emission transitions provide sharp intense lines in the optical spectra [1, 2]. \u003c\/p\u003e\u003cp\u003e\u003c\/p\u003e\u003cp\u003eThe use of rare-earth element-based phosphor, based on ¿¿line-type¿¿ f¿f transitions, can narrow the emissions to the visible range, resulting in high efficiency and a high-lumen equivalence. In recent years, a flourishing care is concentrated on Li3Ba2Gd3-x(MoO4)8 host matrix for luminescent ions in the interest of their excellent chemical and thermal stability and favourable luminescence characteristics compared to the sulfide- and nitride-based materials. \u003c\/p\u003e\u003cp\u003e\u003c\/p\u003e\u003cp\u003eMoreover, these are environmentally friendly as no toxic gases like sulphide are given out. Li3Ba2Gd3-x(MoO4)8 occur in monoclinic crystal system with space group C2\/c in a disordered structure [3].\u003c\/p\u003e\u003cp\u003e\u003c\/p\u003e\u003cp\u003eFor this research paper, a series of Li3Ba2Gd3¿xPrx (MoO4)8 (x = 0.01, 0.03, 0.05, 0.07and 0.09 mol) and Li3Ba2Gd3¿xSmx (MoO4)8 (x = 0.02, 0.04, 0.06, 0.08 and 0.10 mol) red phosphors were synthesized by conventional solid state reaction method.\u003c\/p\u003e\u003cdiv class=\"aw-variant-hidden-subtitle-div\" id=\"aw-variant-subtitle-9783668043053\"\u003e\u003ch3\u003e\u003c\/h3\u003e\u003c\/div\u003e","brand":"Libri","offers":[{"title":"Softcover - 9783668043053","offer_id":39430493470813,"sku":"9783668043053","price":17.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0622\/files\/c7e4d80c-4938-4e58-b11d-c3a3f9e373bc.jpg?v=1778217178","url":"https:\/\/shop.autorenwelt.de\/products\/red-phosphors-for-w-led-applications-von-john-peter","provider":"Autorenwelt Shop","version":"1.0","type":"link"}