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首页> 外文期刊>Energy & environmental science >High light intensity effects on nanoscale open-circuit voltage for three common donor materials in bulk heterojunction solar cells
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High light intensity effects on nanoscale open-circuit voltage for three common donor materials in bulk heterojunction solar cells

机译:高光强度对体异质结太阳能电池中三种常见供体材料的纳米级开路电压的影响

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摘要

White light photoconductive atomic force microscopy (pc-AFM) was employed to evaluate nanoscale open circuit (V_(oc)) at high light intensities (up to 200 sun) of three donoracceptor blends comprising two widely studied polymers and one small molecule donor material. By varying the work function of electron extraction contacts, the V_(oc) observed in nanoscale measurements reveals a unified dependence on the electrode work functions regardless of the blend materials; in line with earlier macroscopic measurements at 1 sun. At high light intensities, an agreement between the nanoscale and bulk V_(oc) is observed. Nonetheless, light intensity dependent V_(oc) measurements suggest that under high light intensities, the V_(oc) obtained by pc-AFM exhibits contact-limited behavior.
机译:白光光电导原子力显微镜(pc-AFM)用于评估三种供体受体共混物的高光强度(最高200太阳)下的纳米级开路(V_(oc)),该共混物包含两种广泛研究的聚合物和一种小分子供体材料。通过改变电子引出触点的功函数,在纳米级测量中观察到的V_(oc)揭示了对电极功函数的统一依赖性,而与混合材料无关。符合早期在1个太阳下进行的宏观测量。在高光强度下,观察到纳米级和整体V_(oc)之间的一致性。但是,依赖于光强度的V_(oc)测量表明,在高光强度下,通过pc-AFM获得的V_(oc)表现出接触受限的行为。

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  • 来源
    《Energy & environmental science》 |2013年第6期|1766-1771|共6页
  • 作者单位

    Department of Chemistry and Biochemistry and Department of Physics, University of California at Santa Barbara, Santa Barbara, CA 93106, USA;

    Department of Chemistry and Biochemistry and Department of Physics, University of California at Santa Barbara, Santa Barbara, CA 93106, USA;

    Department of Chemistry and Biochemistry and Department of Physics, University of California at Santa Barbara, Santa Barbara, CA 93106, USA;

    Department of Chemistry and Biochemistry and Department of Physics, University of California at Santa Barbara, Santa Barbara, CA 93106, USA;

    Department of Chemistry and Biochemistry and Department of Physics, University of California at Santa Barbara, Santa Barbara, CA 93106, USA;

    Department of Chemistry and Biochemistry and Department of Physics, University of California at Santa Barbara, Santa Barbara, CA 93106, USA;

    Department of Chemistry and Biochemistry and Department of Physics, University of California at Santa Barbara, Santa Barbara, CA 93106, USA;

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