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5-junction solar cells with 2.05 eV top sub-cells are the most promising structure to achieve the conversion efficiencies beyond 36% (AM0, 25°C). Al0.13GaInP (Eg≈ 2.05eV) sub-cell is grown by metal organic vapor-phase epitaxy (MOPVE), presenting an efficiency of 10.04% with 1457.3 mV in Voc and 11.9 mA/cm2 in Isc (AM0, 25°C). External quantum efficiency (EQE) of the sub-cell reveals the poor AlInP/Al0...
Advanced traffic information service system not only provide timely and accurate traffic information for traffic management personnel who can effectively adapt the traffic management control system to a variety of traffic conditions and road network capacity, but also help road users, effectively avoiding traffic jams, reducing traffic accidents. However, the existing dynamic traffic information is...
In this paper we address the problem of identifying the similarity measure for face recognition. The similarity measure plays an important role in pattern classification. However, with reference to 2D image matrix based methods for face recognition, such as two dimensional principal component analysis (2DPCA), where the features extracted are matrixes instead of single vectors, studies on the similarity...
A high-speed and high-resolution comparator intended to be implemented in a 12 bit 100 MHz pipeline analog-to-digital converter (ADC) for frequency wireless local area network application is proposed. The designed comparator presents a rail-to-rail input range preamplifier without any capacitance required. This comparator with a novel architecture of output stage achieves very high speed at a low...
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