2‐Dimensional Transition Metal Dichalcogenides with Tunable Direct Band Gaps: MoS2(1–x)Se2x Monolayers

Key Points

• The aim is to investigate how the direct band gaps of MoS2(1-x)Se2x monolayers change with composition.
• Prepared MoS2(1-x)Se2x single-layer films using organic selenium and sulfur precursors.
• Utilized a solid molybdenum source for synthesis.
• Direct bandgaps range from 1.87 eV for pure MoS2 to 1.55 eV for pure MoSe2.
• Direct bandgaps scale nearly linearly with composition.