Growth of large size LBO (Li2B4O7) single crystals by modified Bridgman technique

Structural and photoluminescence studies on europium-doped lithium tetraborate (Eu:Li 2 B 4 O 7 ) single crystal grown by microtube Czochralski (μT-Cz) technique

“…[11] Li 2 B 4 O 7 single crystals were grown using an accelerated crucible rotation tech-nique by Xu and Fan, [12] and using the multi-crucible Bridgman method by Xu et al, [13] and using a modified Bridgman method by Tsutsui et al, respectively. [14] The microtube Czochralski pulling technique paves the way to growing bulk crystal from the melt, if the seed crystal is not available for the material to be grown. [15] A variety of host materials can be value added as a laser and luminescent materials by adding rare earth ions such as Eu 3+ , Er 3+ , Nd 3+ , Tm 3+ , Sm 3+ , Yb 3+ as dopants.…”

Electron and hole traps in Ag-doped lithium tetraborate (Li2B4O7) crystals

“…Upon warming, the radiation-induced trapped electrons and holes seen with EPR recombine between 100 and 200 C, in agreement with a single strong TL peak observed near 160 C. [1][2][3][4][5][6] Large high-quality single crystals with controlled doping can be readily grown and their impurity-related radiative processes can be extremely efficient. [7][8][9][10][11][12][13] Another important feature of Li 2 B 4 O 7 crystals is the presence of two isotopes ( 6 Li and 10 B) with large cross-sections for thermal neutron capture. [14][15][16][17] Crystals enriched with these isotopes may be used in applications involving neutron detection.…”