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Using resonance energy transfer to i...

Liu, Yuxiang.

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Using resonance energy transfer to improve exciton harvesting in organic-inorganic hybrid solar cells.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Using resonance energy transfer to improve exciton harvesting in organic-inorganic hybrid solar cells./
作者:	Liu, Yuxiang.
面頁冊數:	86 p.
附註:	Source: Dissertation Abstracts International, Volume: 66-11, Section: B, page: 5996.
Contained By:	Dissertation Abstracts International66-11B.
標題:	Chemistry, Physical. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3197470
ISBN:	0542431696

Using resonance energy transfer to improve exciton harvesting in organic-inorganic hybrid solar cells.
Liu, Yuxiang.

Using resonance energy transfer to improve exciton harvesting in organic-inorganic hybrid solar cells. - 86 p.

Source: Dissertation Abstracts International, Volume: 66-11, Section: B, page: 5996.

Thesis (Ph.D.)--Stanford University, 2006.

Photovoltaic cells based on conjugated polymers have attracted a lot of attention due to their advantages over the traditional inorganic counterparts. Conjugated polymers can be deposited onto flexible substrates with a variety of low-temperature, low-cost approaches and are compatible with large scale roll-to-roll manufacturing. Polymer solar cells show great potential for scaling up in manufacturing, and they are envisioned as a promising low-cost alternative energy source.

ISBN: 0542431696Subjects--Topical Terms:

560527
Chemistry, Physical.

Using resonance energy transfer to improve exciton harvesting in organic-inorganic hybrid solar cells.
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245 1 0 $a Using resonance energy transfer to improve exciton harvesting in organic-inorganic hybrid solar cells.
300 $a 86 p.
500 $a Source: Dissertation Abstracts International, Volume: 66-11, Section: B, page: 5996.
500 $a Adviser: Michael D. McGehee.
502 $a Thesis (Ph.D.)--Stanford University, 2006.
520 $a Photovoltaic cells based on conjugated polymers have attracted a lot of attention due to their advantages over the traditional inorganic counterparts. Conjugated polymers can be deposited onto flexible substrates with a variety of low-temperature, low-cost approaches and are compatible with large scale roll-to-roll manufacturing. Polymer solar cells show great potential for scaling up in manufacturing, and they are envisioned as a promising low-cost alternative energy source.
520 $a One major limitation to polymer solar cell efficiencies is the relatively small exciton diffusion length, compared to the optical absorption length. Several approaches have been developed to decouple exciton quenching and optical absorption, including bulk heterojunction and tandem structures.
520 $a In this research, I first demonstrated that resonance energy transfer (RET) can be utilized to increase the 'effective' exciton diffusion length and therefore improve the solar cell efficiencies. By studying RET from Nile Red to PCBM, we propose that the energy transfer from conjugated polymer to PCBM could play a crucial role in the most efficient polymer based solar cells.
520 $a When applying the RET approach to planar organic-inorganic hybrid solar cells, we can triple the 'effective' exciton diffusion length of P3HT due to RET from P3HT to PTPTB and increase the device photocurrent by a similar factor.
520 $a By using COOH as binding groups, we developed a facile method to deposit a thin layer of energy acceptor on the surface of nanoporous TiO2 in a controllable way. The acid-base interaction between COOH and TiO 2 results in the formation of an interface dipole layer and leads to the shift of vacuum level. Kelvin probe measurements are performed on solid TiO2 films treated with different polymers to quantify this effect. We assembled and characterized polymer/TiO2 solar cells and found a strong correlation between the shift of vacuum level and the device open circuit voltage.
520 $a Finally, we showed that electropolymerization is a viable way to fill the nanopores with conjugated polymer and create multi-layer structures. Future work will be focused on designing energy donor/acceptor pairs with more efficient energy transfer and larger exciton diffusion length.
590 $a School code: 0212.
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790 1 0 $a McGehee, Michael D., $e advisor
790 $a 0212
791 $a Ph.D.
792 $a 2006
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