Spechler Joshua A, Nagamatsu Ken A, Sturm James C, Arnold Craig B
‡Department of Electrical Engineering, Princeton University, Princeton, New Jersey United States.
ACS Appl Mater Interfaces. 2015 May 20;7(19):10556-62. doi: 10.1021/acsami.5b02203. Epub 2015 May 8.
In this Research Article, we demonstrate pulsed laser processing of a silver nanowire network transparent conductor on top of an otherwise complete solar cell. The macroscopic pulsed laser irradiation serves to sinter nanowire-nanowire junctions on the nanoscale, leading to a much more conductive electrode. We fabricate hybrid silicon/organic heterojunction photovoltaic devices, which have ITO-free, solution processed, and laser processed transparent electrodes. Furthermore, devices which have high resistive losses show up to a 35% increase in power conversion efficiency after laser processing. We perform this study over a range of laser fluences, and a range of nanowire area coverage to investigate the sintering mechanism of nanowires inside of a device stack. The increase in device performance is modeled using a simple photovoltaic diode approach and compares favorably to the experimental data.
在这篇研究论文中，我们展示了对一个完整太阳能电池顶部的银纳米线网络透明导体进行脉冲激光处理。宏观的脉冲激光辐照用于在纳米尺度上烧结纳米线与纳米线之间的结，从而形成导电性更强的电极。我们制备了混合硅/有机异质结光伏器件，其具有无铟锡氧化物（ITO）、溶液处理且经过激光处理的透明电极。此外，具有高电阻损耗的器件在激光处理后功率转换效率提高了高达35%。我们在一系列激光能量密度以及一系列纳米线面积覆盖率范围内开展这项研究，以探究器件堆叠内部纳米线的烧结机制。器件性能的提升通过一种简单的光伏二极管方法进行建模，且与实验数据相比效果良好。
