A Model of Radiative Recombination in (In,Al,Ga)N/GaN Structures with Significant Potential Fluctuations

• Authors: P. Dróżdż , K. Korona , M. Sarzyński , R. Czernecki , C. Skierbiszewski , G. Muzioł , T. Suski
• Languages of publication: EN

Abstracts

EN

The potential fluctuations in III-nitride quantum wells lead to many effects like emission broadening and S-shape energy vs. temperature dependence. The best description of the energy dependence comes from calculations based on Gaussian density of states. However, in most of the published reports, changes of carrier lifetime with energy and temperature are not taken into account. Since experimental evidence shows that lifetime significantly depends on energy and temperature, here we propose a model that describes two basic parameters of luminescence: lifetime of carries and emission energy as a function of temperature in the case of quantum wells and layers that are characterized by potential fluctuations. Comparison of the measured energy and lifetime dependences on temperature in specially grown InGaN/GaN quantum wells and InAlGaN layer shows very good agreement with the proposed theoretical approach.

Keywords

EN

78.55.Cr; 73.22.-f; 78.47.jd

Discipline

• 78.55.Cr: III-V semiconductors
• 78.47.jd: Time resolved luminescence
• 73.22.-f: Electronic structure of nanoscale materials and related systems

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2016
• Volume: 130
• Issue: 5
• Pages: 1209-1212

Dates

published

2016-11

Contributors

author

P. Dróżdż

• Faculty of Physics, University of Warsaw, L. Pasteura 5, 02-093 Warsaw, Poland
• Institute of High Pressure Physics "Unipress", Polish Academy of Sciences, Sokołowska 29/37, 01-142 Warsaw, Poland

author

K. Korona

• Faculty of Physics, University of Warsaw, L. Pasteura 5, 02-093 Warsaw, Poland

author

M. Sarzyński

• Institute of High Pressure Physics "Unipress", Polish Academy of Sciences, Sokołowska 29/37, 01-142 Warsaw, Poland

author

R. Czernecki

• Institute of High Pressure Physics "Unipress", Polish Academy of Sciences, Sokołowska 29/37, 01-142 Warsaw, Poland

author

C. Skierbiszewski

• Institute of High Pressure Physics "Unipress", Polish Academy of Sciences, Sokołowska 29/37, 01-142 Warsaw, Poland

author

G. Muzioł

• Institute of High Pressure Physics "Unipress", Polish Academy of Sciences, Sokołowska 29/37, 01-142 Warsaw, Poland

author

T. Suski

• Institute of High Pressure Physics "Unipress", Polish Academy of Sciences, Sokołowska 29/37, 01-142 Warsaw, Poland

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Identifiers

DOI

10.12693/APhysPolA.130.1209