电导
记忆电阻器
量子点
光电子学
波长
吸收(声学)
材料科学
量子点接触
偏压
物理
电压
凝聚态物理
光学
量子阱
量子力学
激光器
作者
Patrick Maier,F. Hartmann,Mariama Rebello Sousa Dias,Monika Emmerling,Christian Schneider,L. K. Castelano,M. Kamp,G. E. Marques,Victor López-Richard,L. Worschech,Sven Höfling
摘要
We report the optical control of localized charge on positioned quantum dots in an electro-photo-sensitive memristor. Interband absorption processes in the quantum dot barrier matrix lead to photo-generated electron-hole-pairs that, depending on the applied bias voltage, charge or discharge the quantum dots and hence decrease or increase the conductance. Wavelength-dependent conductance control is observed by illumination with red and infrared light, which leads to charging via interband and discharging via intraband absorption. The presented memristor enables optical conductance control and may thus be considered for sensory applications in artificial neural networks as light-sensitive synapses or optically tunable memories.
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