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The vertical organic space-charge-limited transistor made of P3HT and small-molecule phosphorescent organic light-emitting diode (OLED) are made on two separate glass substrate by blade coating, then soldered vertically together by tin balls with 40μm diameter. The soldering is done by hot wind of 150°C for 5min Contact resistance is only 10Ω. The vertical transistor is annealed at 150°C for 5min...
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