Polychiral Semiconducting Carbon Nanotube鈥揊ullerene Solar Cells
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- 作者：Maogang Gong ; Tejas A. Shastry ; Yu Xie ; Marco Bernardi ; Daniel Jasion ; Kyle A. Luck ; Tobin J. Marks ; Jeffrey C. Grossman ; Shenqiang Ren ; Mark C. Hersam
- 刊名：Nano Letters
- 出版年：2014
- 出版时间：September 10, 2014
- 年：2014
- 卷：14
- 期：9
- 页码：5308-5314
- 全文大小：407K
- ISSN：1530-6992
文摘
Single-walled carbon nanotubes (SWCNTs) have highly desirable attributes for solution-processable thin-film photovoltaics (TFPVs), such as broadband absorption, high carrier mobility, and environmental stability. However, previous TFPVs incorporating photoactive SWCNTs have utilized architectures that have limited current, voltage, and ultimately power conversion efficiency (PCE). Here, we report a solar cell geometry that maximizes photocurrent using polychiral SWCNTs while retaining high photovoltage, leading to record-high efficiency SWCNT鈥揻ullerene solar cells with average NREL certified and champion PCEs of 2.5% and 3.1%, respectively. Moreover, these cells show significant absorption in the near-infrared portion of the solar spectrum that is currently inaccessible by many leading TFPV technologies.