Ardhi, Ryanda Enggar Anugrah Tran, Minh Xuan Wang, Manxiang Liu, Guicheng Lee, Joong Kee 2024-01-19T18:03:34Z 2024-01-19T18:03:34Z 2021-09-05 2020-02-07 2050-7488 https://pubs.kist.re.kr/handle/201004/118961 A novel strategy to improve the performance of fibre-shaped dye-sensitized solar cells (FDSSCs) has been successfully implemented using a polar polymer interlayer made of poly(2-ethyl-2-oxazoline) (PEOx). The inclusion of the PEOx interlayer reduces the typical defect sites and interband trap sites that exist on the TiO2-nanotube-based photoanode of the FDSSC. A local built-in electric field, induced by the interfacial intrinsic polarity of the PEOx interlayer, promotes facile photogenerated charge injection/extraction kinetics at the TiO2/dye interface. The negative polarity present on the bottom part of the PEOx chain exhibits an electronic doping-like behaviour, passivating the TiO2 defect sites and reducing trap-assisted recombination, while the positive polarity present on the top part of the PEOx chain provides dye-rich anchoring sites to improve the N719 dye adsorption loading on the TiO2 surface. The charge collection efficiency, short-circuit current density, open-circuit voltage, and fill factor of FDSSCs with the novel TiO2@PEOx photoanodes are superior than those of FDSSCs with traditional TiO2 photoanodes, by approximately 16.94%, 8.57%, 14.08%, and 6.58%, respectively. Consequently, the power conversion efficiency (PCE) of the proposed FDSSC is considerably improved, reaching 11.22%. Thus, the PCE of the proposed FDSSC is improved by approximately 32.16% compared with that of the traditional FDSSC. English ROYAL SOC CHEMISTRY POWER CONVERSION EFFICIENCY TICL4 TREATMENT RECOMBINATION IMPEDANCE TRANSPORT DYNAMICS GRAPHENE SURFACE ARRAYS LAYER Chemically tuned, bi-functional polar interlayer for TiO2 photoanodes in fibre-shaped dye-sensitized solar cells Article 10.1039/c9ta12118h 1 JOURNAL OF MATERIALS CHEMISTRY A, v.8, no.5, pp.2549 - 2562 JOURNAL OF MATERIALS CHEMISTRY A 8 5 2549 2562 scie scopus 000521200000028 2-s2.0-85079245221 Chemistry, Physical Energy & Fuels Materials Science, Multidisciplinary Chemistry Energy & Fuels Materials Science Article POWER CONVERSION EFFICIENCY TICL4 TREATMENT RECOMBINATION IMPEDANCE TRANSPORT DYNAMICS GRAPHENE SURFACE ARRAYS LAYER Bi-functional polar inter layer TuO2 Photoanode fiber-shaped dye-sensitized solar cells