@article{PrallKaspariBrunneretal.2015, author = {Christoph Prall and Christian Kaspari and Frank Brunner and Kolja Haberland and Markus Weyers and Dirk Rueter}, title = {In-situ photoluminescence measurements during MOVPE growth of GaN and InGaN MQW structures}, series = {Journal of Crystal Growth}, volume = {415}, number = {1}, doi = {https://doi.org/10.1016/j.jcrysgro.2014.12.023}, url = {https://nbn-resolving.org/urn:nbn:de:hbz:1393-opus4-843}, pages = {1 -- 6}, year = {2015}, abstract = {In this work we report the first quasi-continuous in-situ photoluminescence study of growing InGaN LED structures inside an industrial-grade metal-organic vapor phase epitaxy (MOVPE) reactor at growth temperature. The photoluminescence spectra contain information about temperature, thickness and composition of the epitaxial layers. Furthermore, the in-situ spectra – even at an early stage of the growth of the active region – can be used to predict the photoluminescence emission wavelength of the structure at room temperature. In this study an accuracy of this predicted wavelength in the range of ± 1.3 nm (2σ) is demonstrated. This technique thus appears suitable for closed-loop control of the emission wavelength of InGaN LEDs already during growth.}, language = {en} }