Molecular spacer engineering of carbazole–phosphonic acid SAMs: Probing interfacial energetics in low-light organic optoelectronic devices - Hee Chun Kim; Ji Hyeon Lee; Tae Hyuk Kim; Min Jong Lee; Eun Soo Shim; Seunghwan Bae; Hyungju Ahn; Han Jung Park; Nak-Seung Patrick Hyun; Jea Woong Jo; Jae Won Shim (Chemical Engineering Journal, 2026)