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Quantum-dot (QD) light-emitting diodes (QD-LEDs) with a sputtered zinc tin oxide (ZTO) electron-transporting layer (ETL) are fabricated and their characteristics are analyzed. The dependence of the luminous efficiency of QD-LEDs on their defect density has been studied by analyzing their electrical and optical properties. By careful optimization of the device structure and process conditions, 800-cd/m...
A new non-cyanide and non-toxic stable electroplating solution for co-deposition Au-Sn alloys was investigated in this study. A stable sulfite-based electroplating solution for gold and a stable solution for tin were prepared, respectively. L-ascorbic acid was added into the Au solution and a reducing agent was added into the Sn solution, and then the two solutions were mixed to generate Au-Sn solution...
LEDs (light emitting diodes) that assembled using flip-chip technology are today used as long-life, energy efficient, environmentally friendly light sources. However, the flip chip solder joints have to meet high requirements. Therefore, their performance and quality are crucial for the integrity of the assembly, which in turn is vital to the overall function of the LED. Au-30at.%Sn eutectic alloy...
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