Abstract
Organic–inorganic halide perovskite solar cells (PSCs) have excellent chemical, electronic, and optical properties, making them attractive next-generation thin-film solar cells. Typical PSCs were fabricated with a perovskite absorber layer between the TiO2 electron-transport layer (ETL) and the 2,2′,7,7′-tetrakis-(N,N-di-4-methoxyphenylamino)-9,9′-spirobifluorene (Spiro-OMeTAD) hole-transport layer (HTL). We examined the influence of phenyl-C61-butyric acid methyl ester (PCBM) on the PSC device. PSCs using the PCBM layer as an ETL were investigated, and the absorber layer was coated by dissolving PCBM in a methyl ammonium lead iodide (MAPbI3) precursor solution to examine the changes at the perovskite interface and inside the perovskite absorber layer. The PSCs fabricated by adding a small amount of PCBM to the MAPbI3 solution exhibited a significantly higher maximum efficiency of 16.55% than conventional PSCs (14.34%). Fabricating the PCBM ETL and PCBM-MAPbI3 hybrid solid is expected to be an efficient route for improving the photovoltaic performance.
Highlights
As energy consumption increases throughout the world, solar cells are expected to be a key technology for solving the energy problem, and organic–inorganic hybrid metal halides are emerging as a new class of absorber materials for solar-cell devices
Organic–inorganic halide perovskite solar cells (PSCs) are important candidates for thin-film solar cells owing to their low cost and high performance
In a typical PSC, the device structure consists of a perovskite absorber layer that converts photons into electron/hole pairs in a photoactive layer, between the electron-transport layer (ETL) as transport photo-generated electrons and the hole-transport layer (HTL) as transport holes
Summary
As energy consumption increases throughout the world, solar cells are expected to be a key technology for solving the energy problem, and organic–inorganic hybrid metal halides are emerging as a new class of absorber materials for solar-cell devices. Organic–inorganic halide perovskite solar cells (PSCs) are important candidates for thin-film solar cells owing to their low cost and high performance. The main advantages of PSCs are their low production cost and high efficiency. Another advantage of PSCs is that they are based on flexible, lightweight, and semi-transparent thin films [4,5,6,7,8,9]. PSCs have a light-absorber layer with an organic–inorganic hybrid perovskite crystal structure—typically methyl-ammonium lead tri-iodide (CH3NH3PbI3, MAPbI3)—fabricated on a transparent conductive oxide coated substrate. N-type and p-type semiconductor materials have been used for the ETL and HTL because they efficiently extract the photoexcited electrons and holes from the perovskite, respectively, which are transported to and collected by a transparent, conducting oxide-coated glass substrate. Most high-efficiency PSCs include TiO2 as an ETL and 2,2 ,7,7 -tetrakis-(N,N-di-4-methoxyphenylamino)-9,9 -spirobifluorene (Spiro-OMeTAD)
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
