Flexible Perovskite Solar Cells via Surface-Confined Silver Nanoparticles on Transparent Polyimide Substrates
Flexible Perovskite Solar Cells via Surface-Confined Silver Nanoparticles on Transparent Polyimide Substrates
复制标题
通过透明聚酰亚胺基板上的表面限制银纳米颗粒的柔性钙钛矿太阳能电池
DOI：
10.3390/polym11030427
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发表时间：
2019-03-01
期刊：
影响因子：
5
通讯作者：
Tu, Guoli
中科院分区：
文献类型：
--
作者：
Liu, Xiangfu;Hu, Lin;Tu, Guoli
我们报告了一种柔性基板，将表面限制的银纳米粒子的透明聚酰亚胺（PI）。掺入的银纳米颗粒（Ag NPs）具有与PI衬底的优异粘合强度，通过改变颗粒尺寸和颗粒间距离来诱导局部表面等离子体共振和光散射效应，以促进钙钛矿太阳能电池中的光捕获。此外，当高导电性聚（3，4-乙撑二氧噻吩）：聚（苯乙烯磺酸盐）（PEDOT：PSS，PH 1000）沉积在Ag NP限制的PI作为柔性底电极时，降低的薄层电阻有利于器件中的电荷提取和传输。基于银纳米颗粒限制的PI衬底（银纳米颗粒的粒径为25 nm与40 nm混合）的柔性钙钛矿太阳能电池获得了10.41%的功率转换效率，其在所有参数中均得到明显提高。特别是，一个61%的改善存在的短路电流密度相比，基于裸PI基板。这表明该基片是一种很有前途的柔性电子器件的候选材料。
We report about a flexible substrate incorporating surface-confined silver nanoparticles on transparent polyimide (PI). The incorporated silver nanoparticles (Ag NPs), which possessed excellent adhesive strength with the PI substrate, induced localized surface plasmon resonance and light scattering effects by changing the particle size and interparticle distance to promote light harvesting in the perovskite solar cells. Moreover, the reduced sheet resistance was beneficial for the charge extraction and transportation in the devices when high-conductivity poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS, PH1000) was deposited on the Ag NP-confined PI serving as a flexible bottom electrode. A power conversion efficiency of 10.41% was obtained for the flexible perovskite solar cells based on a Ag NP-confined PI substrate (the particle size of the Ag NPs was 25 nm mixed with 40 nm), which was obviously enhanced in all parameters. Especially, a 61% improvement existed in the short-circuit current density compared to that based on the bare PI substrates. It indicates that the substrate would be a promising candidate for the development of flexible electronics.