Figure 4
From: Emergence of superconductivity in (NH3)yMxMoSe2 (M: Li, Na and K)
(a) Phase diagram of electron-accumulated MoSe2. This phase diagram is based on the Tconset (diamonds) of (NH3)yMxMoSe2 (this work) and those (circles) of electrostatically electron-accumulated MoSe2 recently reported by Shi et al.17 ‘(NH3)y’ is omitted in the formulas identifying differently M-intercalated (NH3)yMxMoSe2. (b) XRD patterns of (NH3)yNaxMoSe2 samples with different x; each x was determined from the EDX spectrum. The peaks at 2θ = 6.1°, 5.4° and 5.1° correspond to 002 peaks due to non-doped MoSe2, (NH3)yNaxMoSe2 and another (NH3)yNaxMoSe2 phases, respectively. (c) x-dependence of c for the above three phases. The c values do not change with x.
