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Photovoltaic activity in benzobisoxa...

Reida, Molly.

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Photovoltaic activity in benzobisoxazole based conjugated polymers.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Photovoltaic activity in benzobisoxazole based conjugated polymers./
作者:	Reida, Molly.
面頁冊數:	46 p.
附註:	Source: Masters Abstracts International, Volume: 49-01, page: 0592.
Contained By:	Masters Abstracts International49-01.
標題:	Alternative Energy. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1479620
ISBN:	9781124150543

Photovoltaic activity in benzobisoxazole based conjugated polymers.
Reida, Molly.

Photovoltaic activity in benzobisoxazole based conjugated polymers. - 46 p.

Source: Masters Abstracts International, Volume: 49-01, page: 0592.

Thesis (M.S.)--Iowa State University, 2010.

The material and photovoltaic properties of a new class of conjugated polymers was investigated. These two new polymers; poly (3,4-didodecylthiopene vinylene)-2,6-diyl benzo [1,2-d; 5,4-d'] bisoxazole] (cis-DD-PTVBBO) and poly (3,4-didodecylthiopene vinylene)-2,6-diyl benzo [1,2-d; 4,5-d'] bisoxazole] (trans-DD-PTVBBO) were synthesized by Malika Jeffries-El group (Department of Chemistry, Iowa State University). Electron affinities were measured be 3.02eV for cis-DD-PTVBBO and 3.10eV for trans-DD-PTVBBO. The optical bandgaps are around 2eV for both polymers.

ISBN: 9781124150543Subjects--Topical Terms:

1035473
Alternative Energy.

Photovoltaic activity in benzobisoxazole based conjugated polymers.
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100 1 $a Reida, Molly. $3 1678938
245 1 0 $a Photovoltaic activity in benzobisoxazole based conjugated polymers.
300 $a 46 p.
500 $a Source: Masters Abstracts International, Volume: 49-01, page: 0592.
500 $a Adviser: Sumit Chaudhary.
502 $a Thesis (M.S.)--Iowa State University, 2010.
520 $a The material and photovoltaic properties of a new class of conjugated polymers was investigated. These two new polymers; poly (3,4-didodecylthiopene vinylene)-2,6-diyl benzo [1,2-d; 5,4-d'] bisoxazole] (cis-DD-PTVBBO) and poly (3,4-didodecylthiopene vinylene)-2,6-diyl benzo [1,2-d; 4,5-d'] bisoxazole] (trans-DD-PTVBBO) were synthesized by Malika Jeffries-El group (Department of Chemistry, Iowa State University). Electron affinities were measured be 3.02eV for cis-DD-PTVBBO and 3.10eV for trans-DD-PTVBBO. The optical bandgaps are around 2eV for both polymers.
520 $a The low band gap and high electron affinity of these polymers suggest that they would be suitable candidates for use in bulk heterojunction solar cells with Phyenyl-C61-butyric acid methyl ester (PCBM). Solar cells using the cis-DD-PTVBBO and the trans-DD-PTVBBO as the electron donor were fabricated and device characteristics were measured. In addition, hole mobilities were measured and atomic force microscopy (AFM) characterization was performed to evaluate phase separation in the thin films of the active layers.
520 $a Photovoltaic performance was lower than expected and is suspected to be due to poor solubility and large aggregates within the active layer thin film. In addition, it is suspected that poor performance may be due to internal charge transfer between the electron donating thiophene unit and electron accepting benzobisoxazole unit. Having these two units is good in the sense that it delocalizes the charge and reduces the band gap of conjugated polymers; however, it may also lead to reduced electron transfer to the PCBM phase, leading to poor performance of photovoltaic cells.
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790 1 0 $a Neihart, Nathan $e committee member
790 1 0 $a Dong, Liang $e committee member
790 $a 0097
791 $a M.S.
792 $a 2010
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