### Effect of Structure, Temperature, and Metal Work Function on Performance of Organometallic Perovskite Solar CellsEffect of Structure, Temperature, and Metal Work Function on Performance of Organometallic Perovskite Solar Cells

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 Author Hossain, M. I. ♦ Aïssa, B. Source SpringerLink Content type Text Publisher Springer US File Format PDF Copyright Year ©2017 Language English
 Subject Keyword Organometallic perovskite ♦ hole transport materials ♦ structural parameters ♦ temperature effect ♦ Optical and Electronic Materials ♦ Characterization and Evaluation of Materials ♦ Electronics and Microelectronics, Instrumentation ♦ Solid State Physics Abstract The impact of hole transport materials (HTMs) on the performance of methylammonium lead halide (CH$_{3}$NH$_{3}$PbI$_{3}$)-based perovskite solar cells has been investigated using computational analysis. The main objective is to replace the HTM with the aim of enhancing the lifetime and decreasing the overall cost of the device. As the CH$_{3}$NH$_{3}$PbI$_{3}$ absorber layer shows an absorption coefficient as high as 10$^{5}$/cm, all photons with incident energy larger the material bandgap are absorbed within only a 400-nm-thick layer. Also, all the electronic and optical properties of such an absorber layer are suitable for use in photovoltaic (PV) devices. Hence, the effects of the HTM thickness, operating temperature, incident light spectrum, and metal electrode work function on the charge collection were studied numerically. For a cell with Cu$_{2}$O as HTM, efficiency exceeding 25% is predicted for a 350-nm-thick absorber layer. Also, a fully optimized device architecture without HTM shows the possibility of fabricating a perovskite solar cell with PV efficiency exceeding 15%. We expect considerable minimization of the energy loss in this structure due to charge transfer across the heterojunction. Moreover, the effect of temperature on perovskite solar cells and potential electrodes with different work functions has been investigated. Our results are believed to help open an experimental avenue to achieve optimum results for perovskite solar cells with various structures. ISSN 03615235 Age Range 18 to 22 years ♦ above 22 year Educational Use Research Education Level UG and PG Learning Resource Type Article Publisher Date 2017-01-06 Publisher Place New York e-ISSN 1543186X Journal Journal of Electronic Materials Volume Number 46 Issue Number 3 Page Count 5 Starting Page 1806 Ending Page 1810