نتایج جستجو برای: میله های کوانتومی cdse
تعداد نتایج: 481645 فیلتر نتایج به سال:
CdSe nanostructures were synthesized by using green chemical route as starch was used as capping agent. XRD, HR-TEM, SEAD, UV and PL studies were made for structural and optical properties of the prepared sample. Film morphology and the thickness measurement of n-CdSe were carried out with AFM analysis. I-V characteristics curve of this junction confirmed the formation of Schottky contact betwe...
CdSe nanoclusters embedded in silicon oxide layers are produced by sequential physical vapor deposition of SiOx x < 1:5 and CdSe on crystalline silicon substrates at room temperature. High-resolution electron microscopy is used to prove the formation of CdSe nanoclusters as well as to study their shape, size and structure. Cross-sectional electron micrographs of the as-deposited samples revea...
cdse nanostructures were synthesized by using green chemical route as starch was used as capping agent. xrd, hr-tem, sead, uv and pl studies were made for structural and optical properties of the prepared sample. film morphology and the thickness measurement of n-cdse were carried out with afm analysis. i-v characteristics curve of this junction confirmed the formation of schottky contact betwe...
the use of quantum dots (qdots) as bright and photostable probes for long-term fluorescence imaging is gaining more interest. thus far, (pre)clinical use of qdots remains limited, which is primarily caused by the potential toxicity of qdots. most qdots consist of cd2+ ions, which are known to cause high levels of toxicity. therefore, the cytotoxic effects of cdse quantum dots on embryonic devel...
In this work, thin-film solar cells based on Cadmium Selenide (CdSe) film were used, due to the low manufacturing cost and superior electronic properties, type of cell also achieves appropriate efficiency. The current work will focus investigating effect thickness carrier concentration active layers in cell, window performance proposed using one-dimension capacitance simulation SCAPS-1D compute...
Pyridine-protected CdSe nanoparticles decorated SWNTs spontaneously, producing a large loading of CdSe nanoparticles on the SWNTs. The absorption spectrum of this hybrid material reflects those of the components. CdSe nanoparticles of different diameters, core-shell nanoparticles, and nanorods were shown to decorate SWNTs this way, showing the versatility of this technique.
نانوبلورهای نیم¬رساناهایی مانند سلنایدروی و سلناید کادمیوم که به نیم¬رساناهای گروه ii-vi معروف هستند به دلیل ویژگی¬های اپتیکی و الکترونیکی یکتایشان, کابردهای بسیاری در صنعت الکترونیک و اپتیک, ابزارهای اپتوالکترونیکی, زمینه¬های زیستی و صنایع دیگر دارند. در این پایان نامه, نخست به معرفی نانوساختارها و ویژگی¬های آن¬ها می¬پردازیم و برخی از روش¬های تولید و کاربردهای نانوبلور¬ها را به اختصار بیان می...
زمینه: نگاه به سازمان های ارایهدهنده خدمات بهداشتی- درمانی از جمله آزمایشگاه های بالینی در چهارچوب نظریه رهبری کوانتومی باعث به کارگیری روش های کارآمد و مؤثر در این سازمان ها می شود. هدف: تعیین وضعیت ابعاد رهبری کوانتومی در میان مدیران کلیه سطوح سازمانی آزمایشگاه های بالینی بیمارستان های آموزشی دانشگاه های علوم پزشکی شهر تهران بود. مواد و روشها: پژوهش حاضر از نوع توصیفی- تحلیلی بود ک...
In the present work, first an analytic relation for position-dependent effective mass in a quantum rod is obtained. Then, the effect of position-dependent effective mass on the intersubband optical absorption coeffcient and the refractive index change in the quantum rod is examined. Our numerical calculations are performed using both a constant effective mass and the position-dependent effect...
Bulk-heterojunction PPV (poly(p-phenylene vinylene))-CdSe submicron fibers have been prepared by introducing electrostatic interaction between thioglycolic acid capped CdSe nanocrystals and PPV precursor, subsequently with electrospinning and thermal conversion. The photoconductive device on a single PPV-CdSe fiber showed notable photoresponse, good response speed, wavelength-sensitivity, and r...
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