caa a22 4500 606195092 CHVBK 20210128100917.0 cr unu---uuuuu 210128e20151201xx s 000 0 eng 10.1007/s10934-015-0045-3 doi (NATIONALLICENCE)springer-10.1007/s10934-015-0045-3 A new method for improving the performance of dye sensitized solar cell using macro-porous silicon as photoanode [Elektronische Daten] [Mehdi Aliaghayee, Hassan Ghafoori Fard, Ashkan Zandi] This paper presents a novel method to improve the function of dye-sensitized solar cell (DSSC). The proposed method includes use of macro-porous silicon (PSi) as a photoanode for DSSC. The photoanode, PSi, was fabricated by a simple electrochemical anodization process. The effects of the obtained PSi-based photoanode on the DSSC performance are investigated by using photocurrent-voltage, UV-visible spectroscopy, and reflectance spectroscopy measurements. The results show that the macro-porous structure in the PSi-based photoanode not only increases internal surface area in the photoanode, but also functions as an anti-reflective/light-trapping layer. Macro-porous structure leads to the both enhancement of photoanode dye loading capacity and increasing the optical path length of the incident light inside the photoanode. This way, macro-porous structure plays an important role in the improvement of light harvesting efficiency. The optimal power conversion efficiency of 3.56 and 3.93% (spin coated and sputtered TiO2 respectively) is obtained from the PSi-based DSSC, with 58 and 75% improvement in the efficiency as compared to a fabricated conventional DSSC. The measurement results suggest that exploiting PSi in the structure of photoanode raises hopes for low-cost and high-performance production of hybrid Si/dye solar cells in the future. Springer Science+Business Media New York, 2015 DSSC nationallicence Porous silicon nationallicence Electrochemical anodization nationallicence Light harvesting efficiency nationallicence Aliaghayee Mehdi Department of Electrical Engineering, Amirkabir University of Technology, 424 Hafez Avenue, 15875-4413, Tehran, Iran aut Ghafoori Fard Hassan Department of Electrical Engineering, Amirkabir University of Technology, 424 Hafez Avenue, 15875-4413, Tehran, Iran aut Zandi Ashkan Department of Electrical Engineering, Amirkabir University of Technology, 424 Hafez Avenue, 15875-4413, Tehran, Iran aut Journal of Porous Materials Springer US; http://www.springer-ny.com 22/6(2015-12-01), 1617-1626 1380-2224 22:6<1617 2015 22 10934 https://doi.org/10.1007/s10934-015-0045-3 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10934-015-0045-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Aliaghayee Mehdi Department of Electrical Engineering, Amirkabir University of Technology, 424 Hafez Avenue, 15875-4413, Tehran, Iran aut NATIONALLICENCE 700 1- Ghafoori Fard Hassan Department of Electrical Engineering, Amirkabir University of Technology, 424 Hafez Avenue, 15875-4413, Tehran, Iran aut NATIONALLICENCE 700 1- Zandi Ashkan Department of Electrical Engineering, Amirkabir University of Technology, 424 Hafez Avenue, 15875-4413, Tehran, Iran aut NATIONALLICENCE 773 0- Journal of Porous Materials Springer US; http://www.springer-ny.com 22/6(2015-12-01), 1617-1626 1380-2224 22:6<1617 2015 22 10934