Proper In deposition amount for on-demand epitaxy of InAs/GaAs single quantum dots

Shang Xiang-Jun^{1, 2}, Xu Jian-Xing^{1, 2}, Ma Ben^{1, 2}, Chen Ze-Sheng^{1, 2}, Wei Si-Hang^{1, 2}, Li Mi-Feng^{1, 2}, Zha Guo-Wei^{1, 2}, Zhang Li-Chun^{1, 2}, Yu Ying^{1, 2}, Ni Hai-Qiao^{1, 2}, Niu Zhi-Chuan^{1, 2, †,}

Evolutions of QD nucleation at edge. Top right: μPL spectra with corresponding QD height; the rest: 1 μm × 1 μm AFM images and QD height statistics. Inset: small QD nucleation, observed in S4 with abnormal T_sub distribution (see Support information). Legend name: Sample No.-point No.-QD density [μm⁻²].