Investigation on optical, electrical and etching properties of 2-aminopyridinium 4-aminobenzoate: A phase matchable organic single crystal for optoelectronic device applications
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As-grown APAB single crystal.Powder XRD pattern of APAB.FT-IR spectrum of APAB crystal.(a) UV absorption spectrum of APAB crystal;(b) UV transmission spectrum of APAB crystal;(c) The plot of variation of (αhν)2 versus hν.The variation of birefringence with wavelength.(a) The plot of dielectric constant (ϵr) versus log frequency; (b) the variation of dielectric loss with log frequency.The variation of field dependent dark current and photocurrent.Etching surfaces of APAB crystal.HOMO-LUMO sketch of APAB crystal.The plot between average particle size and the second harmonic output values.