Effects of optical and magnetic fields on the electrical characteristics of colloidal graphene quantum dots

Nandi Sukanta; Majji Shanmukh Naidu; Misra Abha

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Effects of optical and magnetic fields on the electrical characteristics of colloidal graphene quantum dots

机译：光学和磁场对胶体石墨烯量子点电特性的影响

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The effects of optical and magnetic fields have a pronounced influence on the electrical performance of graphene quantum dots (GQDs). Nonlinear current-voltage hysteresis during a voltage sweep is revealed due to the charge traps by adsorbates present on the quantum dot (QD) surface. Hence, a polarization dependent variation in QDs even in the presence of the surrounding medium presented an interesting variation in the electrical conductivity. Furthermore, a study of capacitance with frequency revealed that the microwave heating time (MHT) during the preparation of GQDs greatly affected the capacitance value of the colloidal QDs owing to size variation where larger QDs arising from a greater MHT showed lower capacitance and vice versa.

机译：光学和磁场的效果对石墨烯量子点（GQD）的电性能具有明显的影响。由于量子点（QD）表面上存在的吸附物，因此由于电荷捕集而揭示了电压扫描期间的非线性电流电压滞后。因此，即使在周围介质的存在下，QD的偏振依赖性变化呈现了电导率的有趣变化。此外，通过频率的电容研究显示，由于尺寸变化，GQD的制备过程中的微波加热时间（MHT）大大影响了胶体QD的电容值，其中来自更大的MHT的较大QD显示较低的电容，反之亦然。

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来源
《RSC Advances》 |2016年第46期|共8页
作者
Nandi Sukanta; Majji Shanmukh Naidu; Misra Abha;
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Indian Inst Sci Dept Instrumentat &

Appl Phys Bangalore 560012 Karnataka India;

Indian Inst Sci Dept Instrumentat &

Appl Phys Bangalore 560012 Karnataka India;

Indian Inst Sci Dept Instrumentat &

Appl Phys Bangalore 560012 Karnataka India;

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中图分类化学;
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1. Effects of optical and magnetic fields on the electrical characteristics of colloidal graphene quantum dots [J] . Nandi Sukanta, Majji Shanmukh Naidu, Misra Abha RSC Advances . 2016,第46期

机译：光学和磁场对胶体石墨烯量子点电特性的影响
2. Time-and Polarization-Resolved Optical Spectroscopy of Colloidal CdSe Nanocrystal Quantum Dots in High Magnetic Fields [J] . Madalina Furis, Jennifer A.Hollingsworth, Victor I.Klimov, The journal of physical chemistry, B. Condensed matter, materials, surfaces, interfaces & biophysical . 2005,第32期

机译：胶态CdSe纳米晶量子点在高磁场中的时间和偏振分辨光谱
3. Optical and Electrical Properties of Colloidal Quantum Dots in Electrolytic Environments: Using Biomolecular Links in Chemically-Directed Assembly of Quantum Dot Networks [J] . MICHAEL A. STROSCIO, MITRA DUTTA, DINAKAR RAMADURAI, Journal of Computational Electronics . 2005,第1a2期

机译：电解环境中胶体量子点的光学和电学性质：在量子点网络的化学定向组装中使用生物分子链接
4. Electrical and Optical Properties of Colloidal Quantum Dots and Quantum Dot Networks: Role of Surface States and Using Biomolecular Links in Network Assembly [C] . Michael A. Stroscio, Mitra Dutta, Dinakar Ramadurai, International Symposium on Nanoscale Devices, Materials, and Biological Systems: Fundamentals and Applications . 2005

机译：胶体量子点和量子点网络的电气和光学性质：表面状态的作用以及在网络组件中使用生物分子链接
5. Optical properties of single quantum dots in high magnetic field. [D] . Vachon, Martin. 2008

机译：高磁场中单个量子点的光学特性。
6. Integrating an electrically active colloidal quantum dot photodiode with a graphene phototransistor [O] . Ivan Nikitskiy, Stijn Goossens, Dominik Kufer, -1

机译：将电活性胶体量子点光电二极管与石墨烯光电晶体管集成在一起
7. Structural Stability, Electronic, Magnetic and Optical Properties of Rectangular Graphene and Boron-Nitride Quantum Dots: Effects of Size, Substitution and Electric Field [O] . Yamijala, Sharma SRKC, Bandyopadhyay, Arkamita, Pati, Swapan K 2013

机译：结构稳定性，电子，磁性和光学性质矩形石墨烯和氮化硼量子点：尺寸的影响，替代和电场
8. Electrical And Optical Properties Of Colloidal Quantum Dots And Quantum Dot Networks: Role Of Surface States And Using Biomolecular Links In Network Assembly [R] . Stroscio, M. A. , Dutta, M. , Ramadurai, D. , 2004

机译：胶体量子点和量子点网络的电学和光学性质：表面状态的作用和在网络组装中使用生物分子链

Effects of optical and magnetic fields on the electrical characteristics of colloidal graphene quantum dots

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