Halogen‐free solvent processed organic solar sub‐modules (≈55 cm2) with 14.70% efficiency by controlling the morphology of alkyl chain engineered polymer donor

Autor: Thavamani Gokulnath, Hyerin Kim, Donghyun Song, Ho‐Yeol Park, Je‐Sung Jee, Young Yong Kim, Jinhwan Yoon, Kakaraparthi Kranthiraja, Sung‐Ho Jin
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: EcoMat, Vol 6, Iss 11, Pp n/a-n/a (2024)
Druh dokumentu: article
ISSN: 2567-3173
DOI: 10.1002/eom2.12496
Popis: Abstract Goals of high efficiency, morphological analysis, and the ability to produce organic solar cell (OSC) sub‐modules using halogen‐free solvents are demanding. In this study, a robust conjugated polymer with thienothiophene π‐spacer with pendant alkyl side chain (NapBDT‐C12) was synthesized and used to fabricate sub‐modules. Excellent efficiencies were demonstrated by a NapBDT‐C12 integrated ternary blend, which was used to produce stable small‐area‐to‐sub‐module devices using O‐xylene. The efficiency of the NapBDT‐C12 added small‐area ternary devices (PM6:NapBDT‐C12:L8‐BO) was 18.71%. Owing to the controlled homogeneity of the blend with favorable nanoscale film morphology, enhanced carrier mobilities, and exciton dissociation/splitting properties, contributed to the efficiencies of small‐area‐to‐sub‐module OSCs. Moreover, a 55 cm2 sub‐module with an efficiency of 14.69% was accomplished by bar coating using O‐xylene under ambient conditions. This study displays the potential of a ternary blend based OSC device to produce high efficiency scalable sub‐modules at ambient conditions.
Databáze: Directory of Open Access Journals