有機發(fā)光二極管更接近主流照明

　　發(fā)光二極管是一種正在迅速成熟的技術(shù)，正在大舉進軍傳統(tǒng)的照明市場。然而，這并不是城里唯一的新照明技術(shù)。有機發(fā)光二極管（OLED）現(xiàn)在被認為是一些建筑照明應(yīng)用的一個選擇，因為它是一種顯示技術(shù)，在沒有背光的情況下提供鮮艷的色彩。

　　有機電致發(fā)光器件不同于傳統(tǒng)的發(fā)光二極管，因為電致發(fā)光不是來自半導(dǎo)體結(jié)，而是由有機化合物膜產(chǎn)生的。這使得有機發(fā)光二極管易于制造成大的，輕的，甚至是柔性的面板。然而，盡管與傳統(tǒng)的LED相比，一些關(guān)鍵優(yōu)勢，這些設(shè)備還沒有作為商業(yè)照明選項，主要是由于低效率和高成本相比，固態(tài)光源。

　　本文介紹了當今商業(yè)照明OLED的性能，并將其與現(xiàn)有技術(shù)進行了比較，包括LED。

　　An alternative to LEDs

　　LEDs are still a relatively new technology， but hundreds of millions of dollars of development has seen it move into the mainstream. LEDs are compact， energy-efficient products that promise long life and lighting topologies that were previously impossible with fragile and bulky incandescent bulbs and fluorescent tubes.

　　Despite their obvious appeal， LEDs do have some drawbacks. Chief among these is sensitivity to raised operating temperature， which affects efficacy， color， and longevity. Another key drawback is current sensitivity. The current driving the LED must be maintained in a very narrow range; too low and the device fails to illuminate properly， too high and efficiency tails off rapidly.