首页 | 本学科首页   官方微博 | 高级检索  
     


Organic photovoltaic devices incorporating a molybdenum oxide hole-extraction layer deposited by spray-coating from an ammonium molybdate tetrahydrate precursor
Affiliation:1. Department of Engineering, University of Leicester, Leicester LE1 7RH, UK;2. Department of Physics, University of Leicester, Leicester LE1 7RH, UK;3. Diamond Light Source, Harwell Science and Innovation Campus, Harwell OX11 0DE, UK;1. National Institute for Medical Research, The Ridgeway, Mill Hill, London NW7 1AA, UK;2. United Institute of Informatics Problems, National Academy of Sciences of Belarus, Surganov Street 6, 220012 Minsk, Belarus;3. Shemyakin Institute of Bioorganic Chemistry, Moscow, Russia;1. Science and Technology on Advanced High Temperature Structural Materials Laboratory, Beijing Institute of Aeronautical Materials, P. O. Box 81-1, Beijing 100095, China;2. School of Engineering, University of Hull, Cottingham Road, East Yorkshire HU6 7RX, UK;3. Diamond Light Source, Harwell Science and Innovation Campus, Didcot, Oxfordshire OX11 0DE, UK;1. Molecular Photonics Laboratory, School of Chemistry, Newcastle University, Newcastle upon Tyne NE1 7RU, UK;2. Institute of Chemistry, Academy of Sciences of Moldova, 3, Academiei str., Chisinau, Republic of Moldova;3. Crystallography Laboratory, School of Chemistry, Newcastle University, Newcastle upon Tyne NE1 7RU, UK
Abstract:Polymer bulk heterojunction solar cells have been constructed using a thin film molybdenum oxide (MoOx) hole extraction layer that was fabricated by thermally annealing an ammonium molybdate tetrahydrate precursor layer deposited in air by ultrasonic spray-coating. Onto this layer was spray cast a PCDTBT:PC71BM film that acted as the active light-harvesting and charge-transporting layer. We optimise the processing steps used to convert the spray-cast MoOx precursor and show that the temperature at which it is annealed is critical to achieving high device efficiency as it both facilitates the removal of trapped solvent as well as driving its chemical conversion to MoOx. We demonstrate that by optimising the spray-casting and annealing process, we are able to create solar cell devices having a peak power conversion efficiency of 4.4%.
Keywords:Organic photovoltaics  Molybdenum oxide  Spray coating  PCDTBT  Polymer
本文献已被 ScienceDirect 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号