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Junction temperature affects photometric and electrical performance of LED devices. In this paper, junction temperature effect on electrical power is investigated. The theoretical results and measurement results indicate the consumed electrical power of an LED device not only relates to injection current, but also depends on junction temperature. A mathematic model of electrical power of LED devices,...
For different environments of illumination and temperature, we investigate the hysteresis in the transfer characteristic of a-IGZO TFT by controlling the sweep speed of the gate voltage. The hysteresis can be affected by the response time for the transition of oxygen vacancies states to the ionized states and its amount.
High temperature is a rigorous environment factor for reliability tests in automotive IC evaluations. In this paper, we study Isub with Vds stress correlation at different temperatures, and propose a quadratic fit between Isub and Vds stress. The HCI (Hot Carrier Injection) lifetime is studied for temperature dependence at the same time.
We investigates the temperature effect on current-voltage and low frequency noise of multilayer WSe2 FETs. The field effect mobility (μFE), Ion/Ioff, subthreshold slope (SS) and hysteresis were deteriorated as the temperature increases. It is because of enhanced phonon scattering and increase of thermally generated carrier density. From the dependence of noise power spectral density of drain current,...
“Saturation Etching” is the method we have developed for decapsulating silver wire packages using a chemical solution. This method is also effective for copper wire packages, and damages to wires can be minimized by dissolving copper into acid.
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