Highly Efficient Reproducible Perovskite Solar Cells Prepared by Low-Temperature Processing

• Published in: Molecules (Basel, Switzerland) Vol. 21; no. 4; p. 542
• Main Authors: Hu, Hao, Wong, Ka Kan, Kollek, Tom, Hanusch, Fabian, Polarz, Sebastian, Docampo, Pablo, Schmidt-Mende, Lukas
• Format: Journal Article
• Language: English
• Published: Switzerland MDPI 23-04-2016; MDPI AG
• Subjects: Calcium Compounds - chemical synthesis; Calcium Compounds - chemistry; Cold Temperature; Oxides - chemical synthesis; Oxides - chemistry; perovskite solar cell structures; perovskite solar cells; Plastics - chemistry; Solar Energy; Titanium - chemistry; perovskite solar cells; perovskite solar cell structures
• ISSN: 1420-3049; 1420-3049
• DOI: 10.3390/molecules21040542

In this work, we describe the role of the different layers in perovskite solar cells to achieve reproducible, ~16% efficient perovskite solar cells. We used a planar device architecture with
PSS on the bottom, followed by the perovskite layer and an evaporated C60 layer before deposition of the top electrode. No high temperature annealing step is needed, which also allows processing on flexible plastic substrates. Only the optimization of all of these layers leads to highly efficient and reproducible results. In this work, we describe the effects of different processing conditions, especially the influence of the C60 top layer on the device performance.