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We have developed an ultrabroadband thermal light emitter based on carbon nanotube fibers driven either by continuous or pulsed current. Particularly, in pulsed mode, this emitter provides shorter and more intense pulses of terahertz radiation than conventional thermal emitters.
This paper provides an area-efficient, low power and high precision current-to-voltage integrator for photocurrent measuring by using correlated double sampling. A novel CDS scheme is devised by using an interstage capacitor instead of the large error store capacitor to reduce kT/C noise. An integrator prototype with the proposed technique is fabricated using 0.8-µm 2P2M CMOS process for demonstration...
With the development of the modern science and technology, the requirements of temperature control are higher and higher. In most cases, we need real-time detection of the environmental temperature and communications. In order to adapt to the rapid development of technology, temperature tester need to be more effective and accurate. This paper describes the system board based on a broad spectrum of...
In this paper, the photo-stimulated discharge (PSD) current spectra of polyimide (PI) are obtained by the optical parametric oscillator (OPO) laser to characterize the deep space charge traps in the dielectric materials. The result shows that the energy level of charge traps in the PI film is distributed in 3.10~4.10eV, and the main part concentrates in 3.35~3.85eV. These data can provide experimental...
A new kind of one dimensional (1-D) nano - material was successfully prepared by introducing poly (methyl methacrylate) (PMMA) into a kind of track etch nano-hole polymer films via polymerization. The dielectric characteristics of these nano-materials were investigated by high-voltage device and precision impedance analyzer etc. This kind of 1-D nano - material exhibits a better dielectric strength...
Thermally stimulated current (TSC) is developed and a new method for direct determination of trap level distribution in polymer film is proposed. In this method, a new function is defined to weight the contribution of a trap level to the current at any temperature. The demarcation energy is used to study the trap empty process. Analysis shows that only electrons with trap levels very close to the...
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