High Magnetic Field Effects on Plasma Wave THz Detection in Field-Effect Transistors

effects of two dimention external magnetic field on propagation of electromagnetic wave in uniform magnetized plasma slabبررسی اثرات میدان مغناطیسی خارجی دو بعدی روی انتشار موج الکترومغناطیسی در محیط پلاسمایی یکنواخت

جذب و عبور و بازتاب امواج الکترومغناطیسی در پلاسما موضوع مهمی است که مدت زمان طولانی مورد مطالعه قرارگرفته است. تحقیق بروی پلاسمابا توجه به کاربردهایی نظیر تولید انرژی ، عدسی پلاسمایی برای کانونش انرژی و ... از یک اهمیت زیادی برخوردار است. اغلب گفته میشود که 99% ماده موجود در طبیعت در حالت پلاسماست، یعنی به شکل گاز الکتریسته داری که اتمهایش به یونهای مثبت و الکترون منفی تجزیه شده باشد. این تخمی...

Contact effects in polymer field-effect transistors

Contact resistances often contribute significantly to the overall device resistance in organic field-effect transistors (OFETs). Understanding charge injection at the metal-organic interface is critical to optimizing OFET device performance. We have performed a series of experiments using bottom-contact poly(3-hexylthiophene) (P3HT) OFETs in the shallow channel limit to examine the injection pr...

High electric-field effects on short-channel polythiophene polymer field-effect transistors

The field-effect mobility ~FEM! in polythiophene ~PT! polymer field-effect transistors ~PFETs! increases with reduced channel lengths during high driving forces across the source and drain, which is contradictory to the decrease in mobility caused by short-channel effects in amorphous Si thin-film transistors. The longitudinal electric-field ~across source and drain! dependence of the FE mobili...

Plasmonic Terahertz Wave Detectors Based on Silicon Field-Effect Transistors

Numerical Study on THz-Wave Generation and Detection of Field-effect Transistor

A numerical study on the FET-based THz wave generation and detection is presented in this paper. The numerical method is derived directly from the hydrodynamic equations and implemented in Matlab coding. Simulation results are compared with the existing theories, proving the validity of the developed numerical method and providing useful data that the THz detection theory cannot yield. Keywords...