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CL and DLTS spectra emitted from the DSB GBs. (a) The CL spectra; (b) The DLTS spectra.
CL scanning micrographs of the homo-DSB1 GB under different external bias voltages.
DLTS spectra of the homo-DSB1 GB obtained by applying different filling pulse voltages.
(a) Energy band diagram near the p-type homo-DSB GB under an external voltage bias; (b) the equivalent circuit of homo-DSB sample (R1, R2: series resistances; R3: shunt resistance); (c) The dependence of hole density at the D1h level and electron density at the D1e level on external bias voltage; (d) The experimental D1 luminescence (circle symbols) and the calculated radiative recombination rate (solid line) as a function of external bias voltage.
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