Cathodoluminescence from ZnSe Semiconductor Growth Films

Cathodoluminescence Properties of Zno Thin Films

Cathodoluminescence and photoluminescence decay behaviors of CdSe dots embedded in ZnSe

We have investigated cathodoluminescence (CL) and decay dynamics of photoexcited states in CdSe/ZnSe singlefractional monolayer structures grown by molecular beam epitaxy on a GaAs(0 0 1) substrate. CL spectra measured at 10 K by scanning the focused electron beam with a diameter of 200 nm show sharp peak structures superimposed on a broad spectrum. The observed spectra are ascribed to exciton ...

Cathodoluminescence study of domains, defects, and interdiffusion in ZnSe/GaAs(100)

The distribution of dislocations and domains found in thin ZnSe films grown by molecular-beam epitaxy on GaAs(100) has been examined with low-temperature cathodoluminescence (CL) imaging and spectroscopy. Dark-line and bright-line defects in the low-temperature CL imaging of the free-exciton (FE) and Y-band emissions, respectively, are found to correlate with the presence of [ 1 iO]-oriented mi...

Electronic structure of metal/ semiconductor interfaces from cathodoluminescence and soft X-ray photoemission spectroscopies

The dependence of Schottky barrier formation on surface and interface preparation offers several broad avenues for understanding electronic structure and charge transfer at metal/semiconductor junctions. Interface cathodeand photoluminescence measurements reveal that electrically active deep levels form at III-V and II-VI compound semiconductor surfaces and metal interfaces which depend on temp...

Optoelectronic Properties of ZnSe, ITO, TiO2 and ZnO Thin Films

Zinc selenide (ZnSe) a II-VI compound semiconductor with cubic zinc blende structure and a direct bandgap of 2.7 eV is found to be a very promising material for optoelectronic devices (Venkatachalam et al., 2007a). Semiconductor heterostructures employing zinc selenide and related alloys are an option for the production of optoelectronic devices emitting in the blue – green spectral range (Haas...