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As-grown and thermally annealed samples at high temperature (1000 \u00b0C, 1100 \u00b0C and 1200 \u00b0C) and high pressure (1.1 GPa) were analysed by spectroscopic techniques and the annealing effect on the photoluminescence is deeply explored. Under laser excitation of 3.8\u2009eV at room temperature, the as-grown structure exhibits two main emission bands: a yellow band peaked at 2.14\u2009eV and a blue band peaked at 2.8\u2009eV resulting in white light perception. Interestingly, the stability of the white light is preserved after annealing at the lowest temperature (1000\u2009\u00b0C), but suppressed for higher temperatures due to a deterioration of the blue quantum well emission. Moreover, the control of the yellow\/blue bands intensity ratio, responsible for the white colour coordinate temperatures, could be achieved after annealing at 1000\u2009\u00b0C. The room temperature white emission is studied as a function of incident power density and the correlated colour temperature values are found to be in the warm white range: 3260\u20134000\u2009K.<\/jats:p>","DOI":"10.1038\/srep13739","type":"journal-article","created":{"date-parts":[[2015,9,4]],"date-time":"2015-09-04T11:44:02Z","timestamp":1441367042000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":21,"title":["Photoluminescence studies of a perceived white light emission from a monolithic InGaN\/GaN quantum well structure"],"prefix":"10.1038","volume":"5","author":[{"given":"N.","family":"Ben Sedrine","sequence":"first","affiliation":[]},{"given":"T. C.","family":"Esteves","sequence":"additional","affiliation":[]},{"given":"J.","family":"Rodrigues","sequence":"additional","affiliation":[]},{"given":"L.","family":"Rino","sequence":"additional","affiliation":[]},{"given":"M. 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