Flexible Silver Nanowire Meshes for High-Efficiency Microtextured Organic-Silicon Hybrid Photovoltaics
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- 作者：Ting-Gang Chen ; Bo-Yu Huang ; Hsiao-Wei Liu ; Yang-Yue Huang ; Huai-Te Pan ; Hsin-Fei Meng ; Peichen Yu
- 刊名：ACS Applied Materials & Interfaces
- 出版年：2012
- 出版时间：December 26, 2012
- 年：2012
- 卷：4
- 期：12
- 页码：6857-6864
- 全文大小：539K
- 年卷期：v.4,no.12(December 26, 2012)
- ISSN：1944-8252
文摘
Hybrid organic-silicon heterojunction solar cells promise a significant reduction on fabrication costs by avoiding energy-intensive processes. However, their scalability remains challenging without a low-cost transparent electrode. In this work, we present solution-processed silver-nanowire meshes that uniformly cover the microtextured surface of hybrid heterojunction solar cells to enable efficient carrier collection for large device area. We systematically compare the characteristics and device performance with long and short nanowires with an average length/diameter of 30 渭m/115 nm and 15 渭m/45 nm, respectively, to those with silver metal grids. A remarkable power conversion efficiency of 10.1% is achieved with a device area of 1 脳 1 cm2 under 100 mW/cm2 of AM1.5G illumination for the hybrid solar cells employing long wires, which represents an enhancement factor of up to 36.5% compared to the metal grid counterpart. The high-quality nanowire network displays an excellent spatial uniformity of photocurrent generation via distributed nanowire meshes and low dependence on efficient charge transport under a high light-injection condition with increased device area. The capability of silver nanowires as flexible transparent electrodes presents a great opportunity to accelerate the mass deployment of high-efficiency hybrid silicon photovoltaics via simple and rapid soluble processes.