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The defense date of the thesis is 2010-07-28
The current date is 2019-03-21
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URN etd-0727110-154401 Statistics This thesis had been viewed 1786 times. Download 1 times. Author Hsiu-Chi Hsu Author's Email Address No Public. Department Chemical Engineering Year 2009 Semester 2 Degree Master Type of Document Master's Thesis Language Chinese&English Page Count 113 Title Effect on the performance of organic solar cell based on poly(3-hexylthiophene) and fullerene derivative with alkanethiols Keyword dodecanethiol poly(3-hexylthiophene) short circuit current short circuit current poly(3-hexylthiophene) dodecanethiol Abstract In this study, studies on the power conversion efficiency of bulk heterojunction (BHJ) solar cells fabricated with poly(3-hexylthiophene) (P3HT)/[6,6]-phenyl C61-butyric acid methyl ester (PCBM) with the addition of alkanethiol molecules acted as modifier for the influence of the kinds of alkanethiol, the amount of the alkanethiol, annealing temperature, and weight ratio of P3HT/PCBM have been carried out.
According to the results of XRD and AFM measurements, the crystallinity of P3HT phase and the phase separation of P3HT/PCBM blends layer exhibit excellent phenomena for the addition of dodecanethiol. The optimal current density and power conversion efficiency of BHJ solar cell fabricated with P3HT/PCBM with addition of 3 mg dodecanethiol subjected to annealing treatment at 150℃ are 14.2 mA/cm2 and 1.68%, respectively.
The mobilities of P3HT and PCBM with the addition of dodecanethiol increase an order of magnitude larger than those of intrinsic P3HT and PCBM, respectively, by Hall effect measurement. The HOMO and LUMO can be calculated by CV and UV-vis absorption spectra measurements. It is found that the energy bandgap between active layer and cathode-anode electrodes reduces by the addition of dodecanethiol. The result can enhance the charge transport for electrons and holes. Therefore, the power conversion efficiency of the P3HT/PCBM with 3 mg of dodecanethiol solar cell increases fourfold larger than that of reference devices without any additives in the photoactive layer as a consequence.
Advisor Committee Chin-Tsou Kuo - advisor
Shiun-Long Wu - co-chair
Shou-An Chen - co-chair
Files Date of Defense 2010-07-16 Date of Submission 2010-07-28