Choi, Dalsu Yeo, Jun-Seok Joh, Han-Ik Lee, Sungho 2024-01-19T22:01:18Z 2024-01-19T22:01:18Z 2021-09-03 2018-09 2168-0485 https://pubs.kist.re.kr/handle/201004/120955 In this work, we demonstrate the successful trans formation of a polyethylene (PE) thin film into an effective transparent conducting film (TCF). Through thermal oxidative stabilization, an innately noncarbonizable PE thin film could survive carbonization process and converted into a carbon nanosheet (CNS). Interestingly, unlike other CNSs fabricated from pricey sources, those from PE, one of the cheapest polymers, included highly ordered graphitic moieties confirmed by combination of Raman spectra analyses and transmission electron microscopy (TEM). Inclusion of graphitic moieties endowed superior electrical conductivity to PE based CNSs over other CNSs and TCFs without harshly compromising other figures of merits as TCFs. Effectiveness of CNSs as TCFs was assessed by fabricating organic photovoltaic cells (OPVs). OPVs structured on PE CNSs successfully operated and exhibited sound efficiencies. More significantly, PE wastes could be equivalently transformed into CNSs and OPVs as pristine PE did, suggesting possible pathway providing extra financial value to PE wastes; it is worthy to note that PE waste is the largest polymer waste in volume and is mostly buried or burnt. Thus, the technology introduced in this article has profound potential as an effective solution to deal with environmental problems associated with PE wastes by envisioning viable "up cycling" pathway of the wastes. English American Chemical Society RAMAN-SPECTROSCOPY SOLAR-CELLS GRAPHENE ELECTRODES DEVICES NANOTUBE PITCH Carbon Nanosheet from Polyethylene Thin Film as a Transparent Conducting Film: "Upcycling" of Waste to Organic Photovoltaics Application Article 10.1021/acssuschemeng.8b03066 1 ACS Sustainable Chemistry & Engineering, v.6, no.9, pp.12463 - 12470 ACS Sustainable Chemistry & Engineering 6 9 12463 12470 scie scopus 000443924100150 2-s2.0-85052811238 Chemistry, Multidisciplinary Green & Sustainable Science & Technology Engineering, Chemical Chemistry Science & Technology - Other Topics Engineering Article RAMAN-SPECTROSCOPY SOLAR-CELLS GRAPHENE ELECTRODES DEVICES NANOTUBE PITCH Transparent conducting film Upcycling PE Graphitic carbon Organic photovoltaics