Single‐Crystalline Lateral p‐SnS/n‐SnSe van der Waals Heterostructures by Vapor Transport Growth with In Situ Bi Doping. - Sutter, Peter; Piazza, Valerio; Ghimire, Pramod; Fontcuberta i Morral, Anna; Sutter, Eli (Advanced Functional Materials, 2026)