Photoelectron transport tuning of self-assembled subbands

摘要: Conventionally, electrical transport of quantum subbands occurs at very high electric fields, indicating that the medium is easy to break down. In experiments and practical applications, extreme condition difficult satisfy. For information transmission, low power consumption convenient implementation are what we expect. this paper, engineered a special dot array (QDA) embedded in single crystal matrix. By external optical field excitation, found series made self-assembled QDA discretely located Changing spacing between dots leads variation subband spacing. Artificially manipulating microcosmic system can bring interesting macroscopic effects, such as an enhanced absorption intensity ultraviolet range, blue-shift surface plasmon resonance peak nonlinear changed from two-photon saturated absorption. The intrinsic mechanism response was revealed due strong confinement effect dominant intraband transitions. weak Ni gave excellent figure merit order 10(-10). composite films expectation enough become prime candidate for applications near 532 nm. Therefore with interplay subbands, achieved tunable photoelectron process.