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您的检索式：作者名="Roderick C.I.MacKenzie"
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| 1 | Passivation agent with dipole moment for surface modification towards efficient and stable perovskite solar cells显示文摘Recently,there has been renewed interest in interface engineering as a means to further push the performance of perovskite solar cells closer to the Schockly-Queisser limit.Herein,for the first time we employ a multi-functional 4-chlorobenzoic acid to produce a self-assembled monolayer on a perovskite surface.With this interlayer we observe passivation of perovskite surface defects and a significant suppression of non-radiative charge recombination.Furthermore,at the surface of the interlayer we observe,charge dipoles which tune the energy level alignment,enabling a larger energetic driving force for hole extraction.The perovskite surface becomes more hydrophilic due to the presence of the interlayer.Consequently,we observe an improvement in open-circuit voltage from 1.08 to 1.16 V,a power conversion efficiency improvement from 18%to 21%and an improved stability under ambient conditions.Our work highlights the potential of SAMs to engineer the photo-electronic properties and stability of perovskite interfaces to achieve high-performance light harvesting devices. | Ge Wang Chen Wang Yajun Gao Shanpeng Wen Roderick C.I.MacKenzie Liuxing Guo Wei Dong Shengping Ruan | 2022 | Journal of Energy Chemistry2022，31，1： | 1 |
| 2 | Preconditioning for a Phase-Field Model with Application to Morphology Evolution in Organic Semiconductors显示文摘The Cahn–Hilliard equations are a versatile model for describing the evolution of complex morphologies.In this paper we present a computational pipeline for the numerical solution of a ternary phase-field model for describing the nanomorphology of donor–acceptor semiconductor blends used in organic photovoltaic devices.The model consists of two coupled fourth-order partial differential equations that are discretized using a finite element approach.In order to solve the resulting large-scale linear systems efficiently,we propose a preconditioning strategy that is based on efficient approximations of the Schur-complement of a saddle point system.We show that this approach performs robustly with respect to variations in the discretization parameters.Finally,we outline that the computed morphologies can be used for the computation of charge generation,recombination,and transport in organic solar cells. | Kai Bergermann Carsten Deibel Roland Herzog Roderick C.I.MacKenzie Jan-Frederik Pietschmann Martin Stoll | 2023 | Communications in Computational Physics2023，33，6： | 0 |
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