Carbon‐Double‐Bond‐Free Printed Solar Cells from TiO2/CH3NH3PbI3/CuSCN/Au: Structural Control and Photoaging Effects. Issue 6 (13th March 2014)

• Record Type: Journal Article
• Authors: Ito, Seigo; Tanaka, Soichiro; Vahlman, Henri; Nishino, Hitoshi; Manabe, Kyohei; Lund, Peter
• Is Part Of: Chemphyschem. Volume 15:Issue 6(2014)
• Page Start: 1194
• Page End: 1200
• Publication Date: 2014-03-13
• Subjects: Chemistry, Physical and theoretical -- Periodicals; 541.05
• DOI: 10.1002/cphc.201301047
• Languages: English
• ISSNs: 1439-4235

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>Carbon double bond‐free printed solar cells have been fabricated with the structure &lt;F‐doped SnO₂ (FTO)/dense TiO₂/nanocrystalline TiO₂/CH₃NH₃PbI₃/Au&gt; and &lt;FTO/dense TiO₂/nanocrystalline TiO₂/CH₃NH₃PbI₃/CuSCN/Au&gt;, in which CuSCN acts as a hole conductor. The thickness of the CH₃NH₃PbI₃ layer is controlled by a hot air flow during spin coating. The best conversion efficiency (4.86 %) is obtained with &lt;FTO/dense TiO₂/nanocrystalline TiO₂/thin CH₃NH₃PbI₃ (hot‐air dried)/CuSCN/Au&gt;. However, a thick CH₃NH₃PbI₃ layer on CuSCN is better for light‐exposure stability (100 mW cm⁻² AM 1.5) when not encapsulated. Without the CuSCN coverage, the black CH₃NH₃PbI₃ crystal changes to yellow during the light‐exposure stability test, which is due to the transformation of the CH₃NH₃PbI₃ perovskite crystal into hexagonal PbI₂.</p> </abstract>