American wholesale supplier BulbAmerica has supplied new energy efficient OLED lights for customers to replace incandescent light bulbs. According to the company, these OLEDs are made up of many layers of organic materials with various electrical properties. In order to construct white light OLED, scientists from Dresden University of Technology in Germany integrated four individual emitter layers of green, red, blue, and yellow, thereby optimizing the color to fill up the visible spectrum. Although the company also has offered a comprehensive portfolio of incande...