Self-Position of Au NPs in Perovskite Solar Cells: Optical and Electrical Contribution

详细信息    查看全文

• 作者：Da Seul Lee ; Wanjung Kim ; Bong Geun Cha ; Jeong Kwon ; Sung June Kim ; Min Kim ; Jaeyun Kim ; Dong Hwan Wang ; Jong Hyeok Park
• 刊名：ACS Applied Materials & Interfaces
• 出版年：2016
• 出版时间：January 13, 2016
• 年：2016
• 卷：8
• 期：1
• 页码：449-454
• 全文大小：411K
• ISSN：1944-8252

文摘

Metallic nanoparticles (NPs) exhibit a localized surface plasmon resonance (LSPR) and act as scattering centers and subwavelength antennas, so metallic NPs can be incorporated into perovskite solar cells (PSCs) to effectively improve the light absorption of light harvesting devices. Here, we have embedded Au nanoparticles (NPs) into the hole transport layer (HTL) of the PSCs to investigate the photovoltaic effect of the PSCs with Au NPs. Interestingly, it was found that Au NPs dispersed spiro-OMeTAD HTL solution could naturally end up located near the perovskite layer as the result of the spin-coating step. Solar cell performance observations indicate that the LSPR and electrical effects of Au NPs enhance the photovoltaic response of PSCs, in spite of a slight decrease in the open-circuit voltage (V_OC), by causing an incredible improvement in the photocurrent density as a dominant factor.