NDLI: Methylammonium lead iodide perovskite/fullerene-based hybrid solar cells

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Methylammonium lead iodide perovskite/fullerene-based hybrid solar cells

Content Provider	Semantic Scholar
Author	Jeng, Jun-Yuan Chiang, Yi-Fang Lee, Mu-Huan Peng, Shin-Rung Guo, Tzung-Fang Chen, Peter
Copyright Year	2013
Abstract	Turning solar energy into a clean, practical alternative power source will require new types of devices that generate electrical power directly from solar irradiation with high efficiency and at low cost. Recent studies report solar cells based on materials known as organometal halide perovskites that have promising photovoltaic efficiencies.1–5 These devices employ a submicron, crystalline, and well-oriented thin film of organolead iodide perovskite as the light absorber (or as both light absorber and carrier conductor) deposited on the surface of meso (i.e., 1–1000nm)-structured titanium dioxide (TiO2) or aluminum oxide layers through a simple spin-coating process.1, 4 The function of methylammonium lead iodide (CH3NH3PbI3) perovskite is akin to that of the 'electron donor' material in donor-acceptor polymer/organic planarand bulkheterojunction solar cells (i.e., PHJs and BHJs, two typical configurations of these types of cells). Accordingly, we propose depositing or growing a thin layer of acceptor material on CH3NH3PbI3 perovskite film to create a donor-acceptor contact interface for charge separation, in which the hybrid CH3NH3PbI3 perovskite/acceptor PHJ yields the photovoltaic effect under irradiation. Several studies have reported that a thin layer of crystalline CH3NH3PbI3 perovskite is easily prepared by spin-casting a solution of equimolar CH3NH3I and PbI2 (precursor solution) on the substrate.4–6 However, the process of crystal growth can coarsen the film and markedly degrade device performance or result in device failure. To ensure rapid solvent evaporation and, therefore, inhibit crystal coarsening, we preheated the substrate at an elevated temperature of 60C for 5min and cast the precursor solution at a high spinning speed of 6000rpm.7 Figure 1. (a) Methylammonium lead iodide (CH3NH3I) and PbI2 (precursor solution) dissolves in -butyrolactone solution. (b) Spincoating process of CH3NH3PbI3 perovskite solution on indium tin oxide (ITO)/glass substrate.
File Format	PDF HTM / HTML
DOI	10.1117/2.1201307.005033
Alternate Webpage(s)	http://www.spie.org/documents/Newsroom/Imported/005033/005033_10.pdf
Alternate Webpage(s)	https://doi.org/10.1117/2.1201307.005033
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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