Cree flashlight lamp which is the best.
CREE was founded in 1987, is the United States listed companies (1993, NASDAQ: CREE), the leading global manufacturer of famous LED epitaxy, chip, packaging, LED lighting solutions, compound semiconductor materials, power devices and RF integration in the industry and.
Cree flashlight lamp: CREE lamp is not good or bad, only the difference between different models, at about 1K lumens.
The terminal voltage of PN junction constitutes a certain barrier. When the forward bias voltage is applied, the potential barrier decreases, and the majority carrier in the P region and the N region diffuse to each other. Since the electron mobility is much larger than the hole mobility, a large amount of electrons will diffuse into the P region, which will result in the injection of minority carriers into the P region. These electrons are combined with holes in the valence band, and the energy is released in the form of light energy when combined. This is the principle of PN junction luminescence.
