Charge transport mechanism of cross‐linked polyethylene/silicone rubber composite insulation by energy band theory
نویسندگان
چکیده
The composite insulation composed of cross-linked polyethylene (XLPE) and silicone rubber (SiR) is common in high voltage direct current cable accessory installation. However, the space charge accumulation, especially interfacial accumulation XLPE/SiR, poses a serious threat to safe operation accessories, its transport mechanism still unclear, at micro-scale. In order investigate simultaneous measurement relaxation performed on XLPE/SiR various electric fields with different polarities, electronic energy levels XLPE SiR are determined by quantum chemical calculation (QCC). results QCC show that both hole traps electron mainly shallow traps. As for SiR, traps, while deep conductivity significantly under is, there an obvious polarity effect. Based QCC, system constructed considering interface between as well interfaces materials electrodes. On this basis, discussed detail, effect explained, which believed be related differences injection barrier electron/hole SiR.
منابع مشابه
investigation of effective parameters on the rigidity of light composite diaphragms (psscb) by fem
در این رساله با معرفی سقف های psscb متشکل از ترکیب ورق های فولادی ذوزنقه ای و تخته های سیمانی الیافی به عنوان سقف های پیش ساخته (سازگار با سیستم سازه ای قاب های فولادی سبک) به بررسی پارامترهای موثر بر صلبیت سقف، پرداخته می شود. در تحقیق حاضر ابتدا به مدل سازی دو نمونه سقف آزمایش شده، به روش اجزاء محدود با استفاده از نرم افزار تحلیلی abaqus ver 6.10 پرداخته شده است. نمونه های ساخته شده تحت اعما...
Charge Stripe in an Antiferromagnet: 1d Band of Composite Excitations
With the help of analytical and numerical studies of the t-Jz model we argue that the charge stripe in an antiferromagnetic insulator should be understood as a system of holon-spin-polaron excitations condensed at the self-induced antiphase domain wall. The structure of such a charge excitation is studied in detail with numerical and analytical results for various quantities being in a very clo...
متن کاملCharge transport mechanism in lead oxide revealed by CELIV technique
Although polycrystalline lead oxide (PbO) belongs to the most promising photoconductors for optoelectronic and large area detectors applications, the charge transport mechanism in this material still remains unclear. Combining the conventional time-of-flight and the photo-generated charge extraction by linear increasing voltage (photo-CELIV) techniques, we investigate the transport of holes whi...
متن کاملCharge Transport in Carbon Nanotubes-Polymer Composite Photovoltaic Cells
We investigate the dark and illuminated current density-voltage (J/V) characteristics of poly(2-methoxy-5-(2-ethylhexyloxy)1-4-phenylenevinylene) (MEHPPV)/single-walled carbon nanotubes (SWNTs) composite photovoltaic cells. Using an exponential band tail model, the conduction mechanism has been analysed for polymer only devices and composite devices, in terms of space charge limited current (SC...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: High voltage
سال: 2023
ISSN: ['2397-7264', '2096-9813']
DOI: https://doi.org/10.1049/hve2.12316