| abstract |
PROBLEM TO BE SOLVED: To show a high external extraction quantum efficiency by designing a fine particle dispersion containing a phosphorescent organic metal complex, a useful organic EL element material containing the dispersion, and using the organic EL element material, Provided are an organic EL element, a lighting device, and a display device having a long light emission lifetime and a low driving voltage. A fine particle dispersion containing a phosphorescent organometallic complex. [Selection figure] None |