用于光捕获应用的静电纺丝杂化钙钛矿纤维——一维半导体的柔性网络

Electrospun Hybrid Perovskite Fibers-Flexible Networks of One-Dimensional Semiconductors for Light-Harvesting Applications.

作者信息

Bohr Christoph, Pfeiffer Markus, Öz Senol, von Toperczer Florian, Lepcha Ashish, Fischer Thomas, Schütz Markus, Lindfors Klas, Mathur Sanjay

机构信息

Institute of Inorganic Chemistry , University of Cologne , Greinstr. 6 , 50939 Cologne , Germany.

Institute of Physical Chemistry , University of Cologne , Luxemburger Str. 116 , 50939 Cologne , Germany.

出版信息

ACS Appl Mater Interfaces. 2019 Jul 17;11(28):25163-25169. doi: 10.1021/acsami.9b05700. Epub 2019 Jul 2.

DOI:10.1021/acsami.9b05700

PMID:31265229

Abstract

Thin-film organic-inorganic hybrid perovskite (MeNHPbI) solar cells have displayed remarkably high photoconversion efficiencies, making their net-shaping as flexible device elements desirable for a number of applications. Simulations show greatly enhanced light absorption in perovskite fibers in comparison to their thin-film counterparts, which demand the processing of hybrid perovskites in the one-dimensional morphology. We report here on the single-step fabrication of MeNHPbI nanofibers on a customized electrospinning process performed under inert conditions. Our results demonstrate reproducible synthesis of electrospun fiber mats in which the fiber dimensions were tailored by adjusting the polymer (PVP) content. Photoluminescence studies on the perovskite fibers revealed a blue shift of the emission peak possibly due to strain or charge confinement effects. The hybrid perovskite nanofibers offer promising applications in flexible and stretchable optoelectronics.

摘要

薄膜有机-无机杂化钙钛矿（MeNHPbI）太阳能电池已展现出极高的光电转换效率，使其作为柔性器件元件的净成型在众多应用中颇具吸引力。模拟结果表明，与薄膜钙钛矿相比，钙钛矿纤维的光吸收显著增强，这要求以一维形态处理杂化钙钛矿。我们在此报告了在惰性条件下通过定制静电纺丝工艺一步制备MeNHPbI纳米纤维的情况。我们的结果表明，通过调节聚合物（PVP）含量可对静电纺丝纤维垫进行可重复合成，且纤维尺寸可得到定制。对钙钛矿纤维的光致发光研究表明，发射峰可能由于应变或电荷限制效应而发生蓝移。杂化钙钛矿纳米纤维在柔性和可拉伸光电子学方面具有广阔的应用前景。