Extended Data Fig. 3: XPS spectra of QD cores.
From: Homogeneous ZnSeTeS quantum dots for efficient and stable pure-blue LEDs
a, Te 3 d of QD-1 core film measured depth profile with different etch times. b, Te 3 d (left) and S 2p (right) of QD-2 core film measured depth profile with different etch times. c, The relative atomic content of Te and S atoms in QD-1 and QD-2 cores as a function of etching depth.
