2024
DOI: 10.1063/5.0211934
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Temperature dependence of the piezoelectric field in GaInN/GaN quantum wells and its impact on the device performance

Changeun Park,
Jong-In Shim,
Dong-Soo Shin
et al.

Abstract: Temperature-dependent piezoelectric-field characteristics of GaInN/GaN blue quantum wells are experimentally investigated between 100 and 300 K. The results show that the magnitude of the piezoelectric field increases with decreasing temperature with a slope of 1.08 kV cm−1 K−1 due to the increase in a mismatch between thermal expansion coefficients. To understand the impact of temperature-dependent piezoelectric field on the device performance, the external quantum efficiencies (EQEs) of a blue light-emitting… Show more

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