The Ames Laboratory (Ames Laboratory) of the US Department of Energy (DOE) has developed a UV-based complete organic emitter (OLED) that can be used as a wafer-type photoreceptor. This is a pioneering study, scientists in the special field of non-visible light operation, ultraviolet wavelength range of about
400 nm (nm). 'The goal we really want to achieve is to produce a spectrometer that can measure the amount of light or luminescence spectrum that can be absorbed by all objects that emit light or light,' said Joseph Shinar, an Ames laboratory scientist. 'Ames Laboratories of the US Department of Energy) has developed a completely organic ultraviolet light (OLED) near the UV, which can be used as a wafer-type sensor. (Source: Ames Laboratory) All along, many people interested in OLED, mostly in this technology can become a traditional LED replacement technology, and LED widely used in consumer electronics products, therefore, the OLED and ultraviolet spectrum of the relevant research less. 'Because of this, everyone has overlooked the need for OLEDs to be used in small, flexible device analysis devices,' says Ruth Shinar, a laboratory scientist. 'This device can be used to detect food Safety, water quality, medical diagnosis, and other biological sensitivities such as hand-held, used in a variety of different areas and the cost may be low to take a disposable way of use. 'Researchers are spinning, The effect of the resonant cavity is that the microresonator is a reflective surface or a structure of two interfaces. The tiny resonant cavity changes the wavelength behavior of the light. These features allow UV OLED to emit more concentrated light, which can then be used to detect and excite the spectrum. With this OLED array can be on the same device for different analysis and optical excitation. According to the MEMS microresonator study conducted by Ames Labs, the researchers produced a light capable of emitting wavelengths of between 370 and 430 nm, and the shade was dark blue and near ultraviolet, and the result was a continuation of previous scientific results The Graduate student Eeshita Manna (Eeshita Manna) to carry out the experimental process, the scientist Rana Biswah (Rana Biswas) excitation spectrum. Under the study of Emily Hellerich, a graduate student who previously worked in the lab, this time the researchers expanded the range to 470 nanometers by using unique photographic polymeric materials CBP and PVK. And further integration of the visible OLED array resonator before the study, scientists can therefore get a wavelength range of 370 nm to 640 nm. The following two papers discuss this study separately: • Tunable Near UV Microcavity OLED Arrays: Characterizations and Analytical Applications, published in Advanced Functional Materials • Deep Blue / ultraviolet microcavity OLEDs based on solution-processed PVK: CBP blends, published in Organic Electronics : China LED network / Emmachang) More LED related information, please click on China LED network or focus on WeChat public account (cnLED Recessed Spotlightw2013).