Exciton dissociation, charge transport, and recombination in ultrathin, conjugated polymer-<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">TiO</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>nanocrystal intermixed composites

Salafsky, Joshua

doi:10.1103/physrevb.59.10885

Cited by 152 publications

(122 citation statements)

References 23 publications

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“…Thus, although polymers can be utilized as replacements for sensitizing dyes (as in liquid electrolyte DSSCs) [289][290][291], the main effort in applying conjugated polymers focuses on solid-state DSSCs [45,[292][293][294][295][296][297][298]. With environmentally friendly production of this polymer based solid-state DSSC in mind, a device based on water-soluble polythiophene derivative has been presented as well [299].…”

Section: Organic-inorganic Hybrid Polymer Solar Cellsmentioning

confidence: 99%

Polymer Solar Cells

Hoppe

Sariciftci

2007

Photoresponsive Polymers II

124

121

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Section: Organic-inorganic Hybrid Polymer Solar Cellsmentioning

confidence: 99%

Polymer Solar Cells

Hoppe

Sariciftci

2007

Photoresponsive Polymers II

124

121

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“…However, it seems that no clear guidance regarding TiO 2 synthesis has been derived. On the other hand, it has been estimated that the drift velocity of holes would be higher than that of electrons: values of~4 Â 10 4 cm/s [15] against~4 Â 10 3 cm/s [16] were calculated. On this kinetics basis, it seems that direct hole transfers to OH À ions, H 2 O, and other adsorbates, provided they are thermodynamically possible [17,18], should be regarded as key phenomena in photocatalytic reactions.…”

Section: Transport To the Surface Trapping Detrapping And Recombinmentioning

confidence: 99%

Fundamentals of TiO2 Photocatalysis. Consequences for Some Environmental Applications

Pichat

2015

Green Chemistry and Sustainable Technology

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This chapter considers the fundamental phenomena occurring when TiO 2 is excited by photons. The focus is first on the formation and fate of the charges generated by the excitation. Then, the roles in photocatalytic reactions of water and oxygen which are almost always present are presented and discussed; the effects of adding ozone or hydrogen peroxide are also briefly indicated. Regarding the photocatalytic degradation of organic compounds -which is involved in potential applications such as self-cleaning materials and air or water purification -the following issues are examined: the hole-induced and hydroxyl radical-induced pathways and the predictability of the nature of the intermediate products. Some of the material aspects of photocatalysis are dealt with through (1) the influence of the structural and textural characteristics of pristine TiO 2 , (2) the effects of modifying TiO 2 by metal deposits or ion doping, and (3) the basic outcomes of combining TiO 2 with either another oxide (insulating or semiconducting) or a supplementary adsorbent of high surface area. Conclusions are drawn from these fundamental topics about the applicability of TiO 2 photocatalysis.

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“…Electron paramagnetic resonance, EPR, can provide powerful insights into the structure and properties of conducting polymers and has frequently been used to investigate the nature of various quasi-particles (Pratt et al, 1997;Salafsky, 1999;Chakrabarti et al, 1999;Chipara et al, 2003;Dennany et al, 2008Dennany et al, , 2010, such as excitons (Salafsky, 1999), solitons, polarons (Pratt et al, 1997), and bipolarons (Chakrabarti et al, 1999), which are thought to play a central role in charge transport. For example, a single resonance line located close to the g value of 2.003, is assigned to polaronic quasi-particles (Chipara et al, 2003;Kahol, 2000), while the zero spin bipolaron has s = 0 and hence is not EPR active (Yang and Li, 1993;Lippe and Holze, 1991).…”

Section: Epr Of the Pani-nf And Nanocompositementioning

confidence: 99%