共軛高分子奈米複合材料太陽能電池製備與元件效能研究

Preparation and device performance of the conjugated polymer nanocomposite solar cells

莊婉袖(Wan-Shiou Chung)

指導教授 ： 廖建勛

元智大學/工程學院/化學工程與材料科學學系/碩士(2009年)

https://doi.org/10.6838/YZU.2009.00298

摘要

本研究利用有機 / 無機混成材料改善無機奈米微粒於混摻時的分散問題，製備塊式異質接面太陽能電池元件，探討元件的光電特性。首先，利用微波輔助合成無機奈米微粒銅銦硒( CuInSe2 )，另以水溶液方式製備碲化鎘( CdTe )奈米微粒，其次，合成不同分子量含硫醇末端基的聚茀共軛高分子PFO。最後，以含硫醇末端基的十烷基分子1-DT 或PFO改質半導體奈米微粒，製備CdTe-PFO、CdTe-DT、CuInSe2-PFO、CuInSe2-DT等複合物。比較未摻混與摻混奈米微粒之元件，其短路電流相差3個冪次，主要原因是改質後的複合物被有機分子包覆，電荷傳遞路徑增加，導致元件效率下降。而元件的開路電壓Voc則由材料的最高占據分子軌域能階值HOMO所影響，隨半導體種類不同而具有不同的結果。而改質共軛高分子的分子量也會影響Voc值，推測高分子量的PFO(H)包覆粒徑較小的奈米微粒時，PFO(H)的烷基側鏈有凝集的現象所導致。

關鍵字

碲化鎘 ； 銅銦硒 ； 太陽能電池

並列摘要

An organic-inorganic hybrid was prepared to solve the difficulty of nanoparticle disperesed into the blend of P3HT and C60 derivative PCBM. That blend system was used to fabricatie the bulk heterojunction solar cell. First, we prepared inorganic semiconductor nanoparticles CuInSe2 by microwave-assisted synthesis and the CdTe nanoparticles in aqueous solution. Then we used 1-decanethiol and thiol end-capped PFO with different molecular weight to modify nanoparticles obtaining CuInSe2-DT, CuInSe2-PFO, CdTe-DT, CdTe-PFO. Finally, the effect of nanoparticle addition on the perfromance of hybrid solar cells were compared. The encapsulated nanoparticle lengthening the carrier transport path results in a decrease of 3 order of magnitudes of short-circuit current ISC. The open-circuit voltage (Voc) of device is determined by the energy level of semiconductor’s HOMO value. For PFO modified nanoparticles, the molecular weight of polymer also affects the Voc of device due to the alkyl side-chain encapsulation.

並列關鍵字

PFO ； CdTe ； CuInSe2 ； solar cell

參考文獻

1. Talapin, D. V.; Rogach, A. L.; Gaponik, N.; Hoppe, K.; Shevchenko, E. V.; Kornowski, A.; Eychmu1ller, A.; Weller, H. Journal of Physical Chemistry B 2002, 106, 7177-7185.

8. Yang, Y.; Chen, L.-M.; Hong, Z.; Li, G. Advanced Materials 2009, 32, 1434-1449.

13. Antoniadis, H.; Hsieh, B. R.; Abkowitz, M. A.; Stolka, M.; Jenekhe, S. A. 1993, 34, 490.

36. Alivisatos, A. P.; Fromer, N. A.; Gur, I. Journal of Physical Chemistry B 2006, 110, 25543-25546.

2. Hoppe, H.; Sariciftci, N. S. Advanced Polymer Sciences 2008, 214, 1-86.