基于还原氧化石墨烯/介孔二氧化钛纳米复合材料的钙钛矿太阳能电池
Reduced Graphene Oxide/Mesoporous TiO2 Nanocomposite Based Perovskite Solar Cells.
作者信息
Han Gill Sang, Song Young Hyun, Jin Young Un, Lee Jin-Wook, Park Nam-Gyu, Kang Bong Kyun, Lee Jung-Kun, Cho In Sun, Yoon Dae Ho, Jung Hyun Suk
机构信息
School of Advanced Materials Science & Engineering, Sungkyunkwan University , Suwon 440-746, Republic of Korea.
Department of Mechanical Engineering and Materials Science, University of Pittsburgh , Pittsburgh, Pennsylvania 15261, United States.
出版信息
ACS Appl Mater Interfaces. 2015 Oct 28;7(42):23521-6. doi: 10.1021/acsami.5b06171. Epub 2015 Oct 15.
We report on reduced graphene oxide (rGO)/mesoporous (mp)-TiO2 nanocomposite based mesostructured perovskite solar cells that show an improved electron transport property owing to the reduced interfacial resistance. The amount of rGO added to the TiO2 nanoparticles electron transport layer was optimized, and their impacts on film resistivity, electron diffusion, recombination time, and photovoltaic performance were investigated. The rGO/mp-TiO2 nanocomposite film reduces interfacial resistance when compared to the mp-TiO2 film, and hence, it improves charge collection efficiency. This effect significantly increases the short circuit current density and open circuit voltage. The rGO/mp-TiO2 nanocomposite film with an optimal rGO content of 0.4 vol % shows 18% higher photon conversion efficiency compared with the TiO2 nanoparticles based perovskite solar cells.
我们报道了基于还原氧化石墨烯（rGO）/介孔（mp）-二氧化钛纳米复合材料的介观结构钙钛矿太阳能电池，由于界面电阻降低，其电子传输性能得到改善。优化了添加到二氧化钛纳米颗粒电子传输层中的rGO量，并研究了其对薄膜电阻率、电子扩散、复合时间和光伏性能的影响。与mp-TiO₂薄膜相比，rGO/mp-TiO₂纳米复合薄膜降低了界面电阻，因此提高了电荷收集效率。这种效应显著提高了短路电流密度和开路电压。rGO含量为0.4体积%的rGO/mp-TiO₂纳米复合薄膜与基于二氧化钛纳米颗粒的钙钛矿太阳能电池相比，光子转换效率提高了18%。
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