Yeo, Jun-Seok Lee, Cheol-Ho Jang, Dawon Lee, Sungho Jo, Seung Mu Joh, Han-Ik Kim, Dong-Yu 2024-01-20T02:34:18Z 2024-01-20T02:34:18Z 2021-09-05 2016-12 2211-2855 https://pubs.kist.re.kr/handle/201004/123353 Organometal trihalide perovskite solar cells (PeSCs) have recently opened a new era for photovoltaics power sources via the tremendous increase in power conversion efficiency (PCE) in the past five years. The next achievement will occur when scalable and processable PeSCs are realised because of a fundamental understanding of the interfacial characteristics and perovskite crystallization in PeSCs. Here, we report solution processed planar PeSCs with well-tailored functional graphene, successfully demonstrating excellent module PCEs of 10.0% and 8.1% for rigid and flexible substrates, respectively, with active-area of 10 cm(2). Systematic investigations reveal that molecular-doped reduced graphene oxide with fluorine atoms (MFGO) exhibits fast charge-extraction ability and well-aligned energetic interface characteristic due to its intrinsic structure, and MFGO promotes perovskite crystallization and orientation with minimized stoichiometric defects. The solution-processable graphene can function not only as an efficient and stable interlayer but also as an inducer of the crystallization of the perovskite layer in simplified device architectures without a complex process. English ELSEVIER HIGHLY EFFICIENT HALIDE PEROVSKITES HOLE EXTRACTION LOW-COST LAYERS PASSIVATION PERFORMANCE ELECTRODES HYSTERESIS STABILITY Reduced graphene oxide-assisted crystallization of perovskite via solution process for efficient and stable planar solar cells with module-scales Article 10.1016/j.nanoen.2016.10.065 1 NANO ENERGY, v.30, pp.667 - 676 NANO ENERGY 30 667 676 scie scopus 000390636100077 2-s2.0-85003554339 Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Chemistry Science & Technology - Other Topics Materials Science Physics Article HIGHLY EFFICIENT HALIDE PEROVSKITES HOLE EXTRACTION LOW-COST LAYERS PASSIVATION PERFORMANCE ELECTRODES HYSTERESIS STABILITY Perovskite solar cells Graphenes Interfacial layers Solar cell modules Flexible electronics