Design Principles for Narrow-Gap Hybrid Semiconductors: Insights from Viologen-Tin and Viologen-Lead Iodides - Robert P. Reynolds; Jessica H. Persaud; George Volonakis; Andrew J. Torma; Patricia E. Meza; Zek E. Kelly; Constantinos C. Stoumpos; Vinayak P. Dravid; Claudine Katan; Aditya D. Mohite; Mercouri G. Kanatzidis (Journal of the American Chemical Society, 2025)