Reduced Graphene Oxide/Mesoporous TiO2 Nanocomposite Based Perovskite Solar Cells

详细信息    查看全文

• 作者：Gill Sang Han ; Young Hyun Song ; Young Un Jin ; Jin-Wook Lee ; Nam-Gyu Park ; Bong Kyun Kang ; Jung-Kun Lee ; In Sun Cho ; Dae Ho Yoon ; Hyun Suk Jung
• 刊名：ACS Applied Materials & Interfaces
• 出版年：2015
• 出版时间：October 28, 2015
• 年：2015
• 卷：7
• 期：42
• 页码：23521-23526
• 全文大小：342K
• ISSN：1944-8252

文摘

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.