采用高柔韧性还原氧化石墨烯薄膜作为透明电极的有机光伏器件。

Organic photovoltaic devices using highly flexible reduced graphene oxide films as transparent electrodes.

机构信息

School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798.

出版信息

ACS Nano. 2010 Sep 28;4(9):5263-8. doi: 10.1021/nn1015874.

PMID:20738121

Abstract

The chemically reduced graphene oxide (rGO) was transferred onto polyethylene terephthalate (PET) substrates and then used as transparent and conductive electrodes for flexible organic photovoltaic (OPV) devices. The performance of the OPV devices mainly depends on the charge transport efficiency through rGO electrodes when the optical transmittance of rGO is above 65%. However, if the transmittance of rGO is less than 65%, the performance of the OPV device is dominated by the light transmission efficiency, that is, the transparency of rGO films. After the tensile strain (∼2.9%) was applied on the fabricated OPV device, it can sustain a thousand cycles of bending. Our work demonstrates the highly flexible property of rGO films, which provide the potential applications in flexible optoelectronics.

摘要

化学还原氧化石墨烯（rGO）被转移到聚对苯二甲酸乙二醇酯（PET）基底上，然后用作透明导电电极用于柔性有机光伏（OPV）器件。当 rGO 的光透过率高于 65%时，OPV 器件的性能主要取决于通过 rGO 电极的电荷传输效率。然而，如果 rGO 的透过率小于 65%，则 OPV 器件的性能主要由光传输效率决定，即 rGO 薄膜的透明度。在对所制备的 OPV 器件施加拉伸应变（约 2.9%）后，它可以承受一千次弯曲循环。我们的工作证明了 rGO 薄膜的高柔韧性，这为其在柔性光电中的潜在应用提供了可能。