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Suyitno, et al. /International Energy Journal 18 (2018) 53 β 60 59 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0.0 0 0.2 0.4 0.6 Voltage (Volt) Curcumin 0 h Curcumin 100 h Curcumin 200 h N719 Fig. 9. I-V curve of DSSCs with curcumin- and N719-dyes. Table 1. Performance of DSSCs. π π½2 πΉππππ ππΆ ππΆ π·πππΆ (mV) (mAβcm ) πΉπππ‘ππ (%) Treatment (h) Curcumin-0 Curcumin-100 527 0.332 0.552 0.097 Curcumin-200 480 0.079 0.540 0.021 N719 601 1.599 0.478 0.460 633 0.577 0.507 0.185 4. CONCLUSIONS Natural curcumin dyes extracted from turmeric roots have been isolated in our experiment and used successfully as a photosensitizer for DSSCs. Dye- sensitized solar cells with curcumin dyes generates Voc, Jsc, and efficiency of 633 mV, 0.557 mA/cm2, and 0.185%, respectively. Our DSSCs have a good quality of junctions and stable physical structure. However, the performance of DSSCs decreases when subjected a light and heat treatment due to the changes of HOMO and LUMO level of curcumin dyes. ACKNOWLEDGEMENT The authors would like to thank the Rector of UNS and LPDP which has given funding to this research with a letter agreement No. 623 / UN.27.21 / PP / 2017, 204 / UN27.21 / TU / 2018, and 2620 / UN27.1 / PP / 2017. of dye-sensitized solar cells using a natural sensitizer. International Journal of Photoenergy 2017: 5. [4] Calogero G. and G.D. Marco. 2008. Red sicilian orange and purple eggplant fruits as natural sensitizers for dye-sensitized solar cells. Solar Energy Materials and Solar Cells 92: 1341β 1346. [5] Hosseinnezhad M. and K. Gharanjig. 2017. Investigation of green dye-sensitized solar cells based on natural dyes. World Academy of Science, Engineering and Technology, International Journal of Chemical, Molecular, Nuclear, Materials and Metallurgical Engineering 11(6): 464-467. [6] Kim H.-J., Kim D.-J., Karthick S.N., Hemalatha K.V ., Raj C.J., Ok S., and Choe Y ., 2013. Curcumin dye extracted from curcuma longa l. Used as sensitizers for efficient dye-sensitized solar cells. International Journal of Electrochemical Science 8: 8320 - 8328. REFERENCES [7] Gross J., 1991. Pigments in vegetable, chlorophylls, and carotenoids. 1st Edition. US: Springer. [1] Wongcharee K., Meeyoo V., and Chavadej S., 2006. Dye-sensitized solar cell using natural dyes extracted from rosella and blue pea flowers. Solar Energy Materials and Solar Cells 91(7): 566β571. [2] Suyitno S., Saputra T.J., Supriyanto A., and Arifin Z., 2015. Stability and efficiency of dye-sensitized solar cells based on papaya-leaf dye. Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy 148: 99-104. [3] Arifin Z., Soeparman S., Widhiyanuriyawan D. and Suyitno S., 2017. Performance enhancement [8] Castillo M.L.R.D., LoΜpez-Tobar E., Sanchez- Cortes S., Flores G. and Blanch G.P., 2015. Stabilization of curcumin against photodegradation by encapsulation in gamma- cyclodextrin: A study based on chromatographic and spectroscopic (raman and uvβvisible) data. Vibrational Spectroscopy 81: 106-111. [9] Shi Z.L.M. and F.J. Francis. 1992. Stability of anthosianins from tradescania pallida. Journal of Food Science 57(3): 758-760. www.rericjournal.ait.ac.th Current Density (mA/cm2)PDF Image | Curcumin-Dye-Sensitized Solar Cells
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