Rose Bengal sensitized niobium pentaoxide photoanode for dye sensitized solar cell application

Comparative Study of TiO2, ZnO, and Nb2O5 Photoanodes for Nitro-Substituted Naphthoquinone Photosensitizer-Based Solar Cells

“…Thus, based on the energy levels of NO 2 Lw, TiO 2 , and ZnO, the electron injection from the LUMO level of NO 2 Lw into the CB of TiO 2 and ZnO is possible. However, the CB position of Nb 2 O 5 (−3.7 eV) is above the LUMO level of NO 2 Lw (−3.86 eV). Some unexpected electron injection has been observed in the present case, and Nb 2 O 5 photoanode-based DSSCs , showed lower performance than ZnO and TiO 2 .…”

“…Each mixture was then homogenized for 2 h in an ultrasonic bath before adding α-terpineol. Two to three drops of acetylacetone (HPCL, India) were added to the (TiO 2, ZnO, and Nb 2 O 5 ) dispersions, and homogenization was carried out in an ultrasonic bath for 3 h. 36,63,67 2.2. Preparation of TiO 2 , ZnO, and Nb 2 O 5 Photoanodes and Fabrication of DSSCs.…”

Nanoengineering TiO2 for evaluating performance in dye sensitized solar cells with natural dyes

“…5A) which is in coherence with the existing studies. 47–51 The appearance of absorption spectra in the range between 454 and 540 nm indicated high concentration of anthocyanin isomers present in these extracted natural dyes. 52,53 It was found that the Hibiscus rosa-sinensis displayed two wide absorption peaks at 430 nm and 540 nm.…”

Titania Nanorods Embedded with 2-Bromo-3-(methylamino)naphthalene-1,4-dione for Dye-Sensitized Solar Cells

“…To meet the rising energy need, the search for new energy sources and easily fabricated photovoltaic devices has recently been of paramount importance. Solar light energy is the clean, most abundant, sustainable, and inexpensive source among the available renewable sources. − Photovoltaic devices have attracted great interest in achieving efficient solar energy utilization due to their effective solar energy to electrical energy conversion efficiency. − However, the photovoltaic performance of photovoltaic devices (DSSCs) significantly depends on the properties of the photoanode materials and their structure. ,,, Till today, numerous semiconductors (ZnO, TiO 2 , Zn 2 SnO 4 , and SnO 2 ) have been used as photoanode materials to drive reactions in solar cells. − Due to its specific properties such as nontoxicity and strong chemical stability, TiO 2 is considered one of the capable photocatalyst candidates. , However, due to the wide band gap (3.0–3.2 eV), TiO 2 can absorb only ultraviolet light from the solar spectrum. Thus, out of the total light available from the solar spectrum, TiO 2 absorbs only 4–5% incident light, while nearly 43% of the visible light in the solar energy is wasted .…”

“… 4 − 7 However, the photovoltaic performance of photovoltaic devices (DSSCs) significantly depends on the properties of the photoanode materials and their structure. 3 , 5 , 8 , 9 Till today, numerous semiconductors (ZnO, TiO 2 , Zn 2 SnO 4 , and SnO 2 ) have been used as photoanode materials to drive reactions in solar cells. 10 − 16 Due to its specific properties such as nontoxicity and strong chemical stability, TiO 2 is considered one of the capable photocatalyst candidates.…”