Biało-świecące diody LED rewolucjonizują technikę oświetleniową

• Autorzy: Mroziewicz, B.

Warianty tytułu

EN

White-emitting LEDs revolutionize lighting

• Języki publikacji: PL

Abstrakty

PL

Diody elektroluminescencyjne (LED) legły u podstaw rozwoju optoelektroniki służąc przez wiele lat jako źródła promieniowania prawie koherentnego o długości fal rozciągającej się od światła zielonego do podczerwieni. Spełniały głównie role wskaźników sygnalizujących stan systemu, służyły do wyświetlania informacji lub były źródłami sygnałów optycznych. Jednak dopiero opanowanie technologii produkcji LED emitujących światło o barwie fioletowo-niebieskiej przyniosło trzeci składnik barwowy umożliwiający syntezę światła białego. Prowadziło to do budowy diod zawierających trzy chipy emitujące światło czerwone zielone i niebieskie, lecz szybko okazało się, że rozwiązaniem tańszym będzie wykorzystanie nowych diod do pobudzania luminoforów, które w rezultacie napromieniowania światłem krótkofalowym emitują światło białe. Okoliczność ta zbiegła się w czasie z uświadomieniem przez ekologów zagrożeń związanych z zanieczyszczeniem atmosfery dwutlenkiem węgla (CO₂) i wynikającą stąd koniecznością ograniczenia światowego zużycia energii elektrycznej.

EN

Light emitting diodes (LEDs) have been fundamental for most developments in the optoelectronics. Over many years they were indispensable as sources of nearly coherent radiation in the light-band extending from green to infrared. They were serving as indicators, displays and signal sources, respectively. However, it was not until the violet-blue LEDs have been developed that white light could be synthesized. These LEDs have led to RGB (red, green, blue) white emitting LEDs but soon turned out that it would be cheaper to generate white light by illuminating with blue light a proper phosphor. Such notion was developed just on time as it had been understood that treats brought about by CO₂ air pollution and necessity to restrict electrical energy consumption are becoming obligatory. White-emitting LEDs feature properties that allow not only for reduction of demand for electricity but also promise economical profits. Some selected topics conceming LEDs used for SSL (solid state lighting) are the subject covered by the present review.

Słowa kluczowe

PL

biało-świecące diody LED; oświetlenie; perspektywy rozwoju

EN

white LEDs; solid state lighting; growth potential

• Czasopismo: Elektronika : konstrukcje, technologie, zastosowania
• Rocznik: 2010
• Tom: Vol. 51, nr 9
• Strony: 145-154
• Opis fizyczny: Bibliogr. 34 poz., il., wykr.

Twórcy

autor

Mroziewicz, B.

• Instytut Technologii Elektronowej, Warszawa

Bibliografia

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