دراسة تأثيرالتشويب بالخارصين في الخواص التركيبية و الكهربائية لأغشية CdTe الرقيقة

الملخص EN

Some of structural, and electrical properties of pure and zinc (Zn) doped cadmium telluride thin films with impurity percentages (0.5, 1, 1.5) %, deposited on hot glass substrate (temperature equals to 423K) of thickness of 300nm and rate deposition of 0.5 nm.s-1 by thermal co-evaporation technique under vacuum of (2×10-5)Torr have been investigates.

The structural properties for the prepared films were studied before and after.

doping process by analysis of the X-ray diffraction, and it appeared that pure and dopant CdTe thin films are polycrystalline and have the cubic structure with preferential orientation in the [111] direction, and the crystal structure of the films were improved due to doping process.

From d.c.electrical conductivity in range of (291-495) K, we noticed that there are two activation energies Ea1 and Ea2, and their values decrease with the..increase.of.Zn.percentages,so..(σd.c.)..of..those..thin.films.increase .

From Hall.effect.

measurements we showed that the..(σd.c.)..

for CdTe thin film is of n-type and converted to p-type when they adopted with Zn, and charge carrier