“…Other procedures are vapor-solid-solid (VSS) synthesis [19], non-catalytic procedure [20,21], laser ablation [22,23], glancing angle deposition [24], modified surfactant mediated epitaxy [25], supercritical fluid-liquid-solid process [26,27], supercritical fluid-solid-solid synthesis [28], thermal evaporation [29], electrochemical etching [30]. Usually, starting precursor are very simple -elemental Ge [16][17][18] or germanes GeH 4 [2][3][4][5][6][7][8][9][10][11][12], GeI 4 [31], GeCl 4 [32] and Ge 2 H 6 * Corresponding author.…”