Bulk defects in nano-crystalline and in non-crystalline HfO2-based thin film dielectrics

Temperature dependence of the optical ga

Temperature dependence of the optical gap in thin amorphous films of As2S3, As2Se3 and other basic non-crystalline chalcogenides

✍ H. Tichá; L. Tichý; P. Nagels; E. Sleeckx; R. Callaerts 📂 Article 📅 2000 🏛 Elsevier Science 🌐 English ⚖ 146 KB

Optical transmittivity in the UV-VIS region of thermally evaporated amorphous As 2 S 3 , and As 2 Se 3 thin films was measured in the temperature region 15 K Ͻ T Յ 300 K: The temperature dependence of the optical gap E g T was found to be in agreement with Fan's one-phonon approximation or with Cody