Defect assessment of Mg-doped GaN by beam injection techniques | Zendy

C. Dı́az-Guerra | Zendy; J. Piqueras | Zendy; A. Castaldini | Zendy; A. Cavallini | Zendy; L. Polenta | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Open Access

Defect assessment of Mg-doped GaN by beam injection techniques

Author(s) -

C. Dı́az-Guerra,

J. Piqueras,

A. Castaldini,

A. Cavallini,

L. Polenta

Publication year - 2003

Publication title -

journal of applied physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.699

H-Index - 319

eISSN - 1089-7550

pISSN - 0021-8979

DOI - 10.1063/1.1628832

Subject(s) - cathodoluminescence , photocurrent , spectroscopy , materials science , doping , electron beam induced current , quenching (fluorescence) , photoconductivity , atomic physics , recombination , metastability , analytical chemistry (journal) , band gap , molecular physics , optoelectronics , chemistry , luminescence , optics , fluorescence , physics , biochemistry , organic chemistry , chromatography , quantum mechanics , silicon , gene

The electronic recombination properties of Mg-doped GaN have been investigated by steady state and time-resolved cathodoluminescence (TRCL) in the scanning electron microscope, photocurrent (PC) spectroscopy, and optical beam induced current (OBIC). CL and OBIC maps reveal an inhomogeneous recombination activity in the investigated material. Deep levels giving rise to level-to-band transitions were detected by PC spectroscopy. A large PC quenching observed upon illumination with light of (2.65-2.85) eV is tentatively attributed to metastable traps within the band gap. CL spectra reveal the existence of emission bands centered at 85 K at 3.29, 3.20, 3.15, and 3.01 eV, respectively. Both time-resolved and steady-state CL measurements carried out under different excitation conditions indicate that the 3.15 and 3.01 eV emissions are likely related to donor-acceptor pair transitions. TRCL measurements also reveal different recombination kinetics for these bands and suggest that deep donors are involved in the mechanism responsible for the 3.01 eV emission

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research