所有聚合物光伏设备的聚3-4-n-octyl) -phenylthiophene) 来自格林纳德转化 (GRIM) 聚合
Thomas W Holcombe1, Claire H Woo, David F J Kavulak
1Department of Chemistry, University of California, Berkeley, California 94720-1460, USA.
Journal of the American Chemical Society
|September 18, 2009
概括
通过格里格纳德转化 (GRIM) 合成的Poly[3-(4-n-octyl) -phenylthiophene] (POPT) 显示出有机光伏 (OPV) 的前景. 基于POPT的设备实现了高效率,在全聚合物太阳能电池中表现优于类似材料.
科学领域:
- 材料科学 材料科学 材料科学
- 有机电子 有机电子
- 太阳能光伏发电是如何实现的
背景情况:
- 有机光伏 (OPV) 为传统的基于的太阳能电池提供了一个有希望的替代方案.
- 开发高效和稳定的有机半导体材料对于推进OPV技术至关重要.
- 聚3-基基因因在OPV中的潜力得到了广泛研究,但它们的性能可能是有限的.
研究的目的:
- 使用格里格纳德转化 (GRIM) 聚合合成和表征聚[3-(4-n-octyl) -phenylthiophene] (POPT).
- 评估GRIM POPT用于有机光伏应用的电子,光学和处理性能.
- 为了比较基于POPT的OPV与使用其他有机半导体的最先进设备的性能.
主要方法:
- 在POPT合成中使用了格里纳德转化酶 (GRIM) 聚合.
- 用空间电荷有限电流和场效应晶体管测量来确定洞的移动性.
- 通过旋转造来制造薄膜,并分析它们的光学特性 (带间隙).
- 批量异质连接 (BHJ) 和双层有机光伏设备被制造和测试.
主要成果:
- GRIM POPT对OPVs具有有利的电子,光学和处理特性.
- 在POPT中,洞的移动性为1×10{-4}厘米{2}/{V}秒 (SCC) 和0.05厘米{2}/{V}秒 (FET).
- POPT薄膜显示了1.8 eV的带间隙,PC(61) BM:POPT BHJ设备达到3.1%的峰值效率.
- 使用POPT和CNPPV的全聚合物双层OPV达到2.0%的效率,超过P3HT/CNPPV设备 (0.93%的效率).
结论:
- GRIM POPT是高性能有机光伏的可行材料.
- 基于POPT的设备显示出具有竞争力的效率,特别是在全聚合物配置中.
- 该研究强调了POPT在OPV应用中作为P3HT的替代品的潜力,挑战了以前关于基于能量水平对齐的材料选择的假设.
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