Research Interests

Current research interests are focused on the high energy excited states of ions in solids, especially rare earth ions. The main objective is the development of new phosphors with improved efficiency which can be applied in mercury-free fluorescent lamps and in plasma displays. These phosphors are excited in the vacuum ultraviolet and emit two (or more) photons for each input photon and are referred to as quantum cutting phosphors. In addition, research activity continues on the optical dynamical properties of rare earth-doped nanoparticles.

Recent Publications

Gatch, D.B., Boye, D.M., Shen, Y.R., Grinberg, M., Yen, Y.M., Meltzer, R.S., "Pressure dependence of the impurity-trapped exciton emission in BaF₂:Eu and Ba_xSr_1-xF₂:Eu",  Physical Review B - 74 (8), in press (2006).

Feofilov, S.P., Zhou, Y., Seo, H.J., Jeong, J.Y., Keszler, D.A., Meltzer, R.S., "Host sensitization of Gd³⁺ ions in yttrium and scandium borates and phosphates: Application to quantum cutting", Physical Review B - 74 (8), art. no. 085101, (2006).

Wang, J.W., Turos-Matysiak, R., Grinberg, M., Yen, W.M., Meltzer, R.S., "Mixing of the f²(¹S₀) and 4f5d states of Pr³⁺ in BaSO₄ under high pressure"  J. Luminescence 119-120 (SPEC. ISS.), pp. 473-477 (2006).

Zhou, Y., Feofilov, S.P., Jeong, J.Y., Keszler, D.A., Meltzer, R.S., "Quantum cutting in Gd_xY_1-xLiF _4: Nd - Dynamics and mechanisms",  J. Luminescence 119-120 (SPEC. ISS.), pp. 264-270 (2006).

Meltzer, R.S., Zheng, H., Wang, J.W., Yen, W.M., Grinberg, M., "Pressure dependence of the 4f₁ 5d₁→4f₂ emission of Pr³⁺:YAG using excited state absorption", Physica Status Solidi C: Conferences 2 (1), pp. 284-288 (2005).

Jia, W., Zhou, Y., Feofilov, S.P., Meltzer, R.S., Jeong, J.Y., Keszler, D., "Quantum splitting and its dynamics in GdLiF4: Nd", Physical Review B 72 (7), art. no. 075114 0 (2005).

Meltzer, R.S., Zheng, H., Dejneka, M.J., "Photon echo studies of LaF₃: Pr³⁺ nanocrystals in glass" J. Luminescence 107 (1-4), pp. 166-175 (2004).

Grinberg, M., Barzowska, J., Shen, Y., Meltzer, R.S., Bray, K.L., "Pressure dependence of electron-phonon coupling in Ce³⁺-doped Gd₃Sc₂Al₃O₁₂ garnet crystals", Physical Review B 69 (20), art. no. 205101 (2004).