2012
DOI: 10.1016/j.enconman.2011.07.014
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The role of the Quinonine and Pyridine added to catechol to improve the efficiency of dye sensitized solar cell: An ab initio study

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Cited by 10 publications
(2 citation statements)
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“…The relative positions of these surface levels, gap, and adsorbate states are key to interpreting experimental results; however, the GGA DFT formalism does not grant very accurate band gaps for TiO 2 . Nevertheless, the Kohn–Sham energies resemble experimental lineups to a remarkable extent in terms of reproducing the band edge offset and valence band energies. , Our PBE-computed band gaps for the unbound anatase and rutile slabs are 1.89 and 0.71 eV, respectively. These values are significantly smaller than the experimental band gap values of 2.6–3.3 , and 1.99–2.6 , eV for anatase and rutile surfaces, respectively, but in agreement with the theoretical studies applying PBE to TiO 2 slab systems (1.75–2.5 and 0.5–1.0 eV). While inadequate for accurate descriptions of the relative energies involved in photoexcitation, the DFT information is sufficient for a qualitative picture of the trends present among the different systems. Due to the undershot band gap for rutile, all the PDOS for systems adsorbed on rutile are represented in the SI for completeness and comparative purposes.…”
Section: Resultssupporting
confidence: 79%
“…The relative positions of these surface levels, gap, and adsorbate states are key to interpreting experimental results; however, the GGA DFT formalism does not grant very accurate band gaps for TiO 2 . Nevertheless, the Kohn–Sham energies resemble experimental lineups to a remarkable extent in terms of reproducing the band edge offset and valence band energies. , Our PBE-computed band gaps for the unbound anatase and rutile slabs are 1.89 and 0.71 eV, respectively. These values are significantly smaller than the experimental band gap values of 2.6–3.3 , and 1.99–2.6 , eV for anatase and rutile surfaces, respectively, but in agreement with the theoretical studies applying PBE to TiO 2 slab systems (1.75–2.5 and 0.5–1.0 eV). While inadequate for accurate descriptions of the relative energies involved in photoexcitation, the DFT information is sufficient for a qualitative picture of the trends present among the different systems. Due to the undershot band gap for rutile, all the PDOS for systems adsorbed on rutile are represented in the SI for completeness and comparative purposes.…”
Section: Resultssupporting
confidence: 79%
“…Polipirol (PPy)/TiO 2 nano kompozitleri ile ilgili literatürde deneysel yöntemler ile foto katalitik özellikleri açıklayan çalışmalar bulunmaktadır [21][22][23]. Bazı teorik çalışmalar ile optik, elektronik yapıları, etkileşimdeki yüzeyleri ve PPy-TiO 2 arasındaki yük transfer özellikleri açıklanmaya çalışılmıştır [24][25]. Fakat bu çalışmalarda kullanılan TiO 2 yapısı tek bir molekülden oluştuğu için yüzey özellikleri ve elektron transfer özellikleri ile yapıya bağlanma enerjileri doğru bir şekilde hesaplanamamaktadır.…”
Section: Introductionunclassified