The discovery and design of new solid state materials and their crystal growth is of critical importance for future scientific and technological growth. We have been developing the chemistry of complex chalcogenide materials with semiconducting and optical properties using a variety of synthesis approaches including intermediate temperature fluxes and solventothermal techniques. These techniques allow one to bypass certain �heat and beat� methods that can lead to thermodynamic avenues and arrive at either kinetically stabilized compounds while at the same time affording large single crystals for physical characterization. In this presentation we will highlight some of our recent results on several thioarsenate, selenoarsenate, thiophosphates and selenophosphate materials with new structures and exceptional chemical, semiconducting, light emitting and nonlinear optical (NLO) properties. The chemistry and processing, electronic properties and NLO behavior of materials such as Na2Ge2Se5, Rb4Sn5P4Se20, LiAsQ2, NaAsQ2, (Q = S, Se), Cs5BiP4Se12, and K4GeP4Se12 which feature unusual property trends and in several cases record breaking broadband second and third harmonic generation efficiency. K4GeP4Se12 exhibits both a crystalline and a glassy phase both exhibiting unusual second harmonic generation due to a partial preservation of local crystallographic order.

Solid state chemistry of chalcogenides: Materials with novel optical and electronic properties

246th National Meeting (2013)

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.