0.14 0.12 0.1 0.08 0.06 0.04 0.02 -0.02 -0.02 Qint 0.00002 0.00004 0.00006 0.00008 0.0001 0.0( Time (sec) Fig4.7 Qext vs. time showing the value of Qint for a half-stack as-deposited ZnS:ErF3 device.