Since the beginning of 21st Century, scientists and engineers have been investigating triboluminescent materials for use in smart impact sensors. One of the brightest triboluminescent materials found thus far is europium dibenzoylmethide triethylammonium (EuD4TEA). This material was discovered by Hurt in 1966 and is bright enough to be seen in daylight. Through innovative design of the material synthesis steps and by exchanging europium chloride for europium nitrate, the triboluminescent emission was increased by over 80%. In addition, the material yield was increased, as chloride washing is not required. Here, we discuss the new synthesis process, triboluminescent results, and future applications of EuD4TEA phosphors.

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DOI: 10.1016/S1369-7021(11)70147-X