Mixed Cation FAxPEA1–xPbI3 with Enhanced Phase and Ambient Stability toward High‐Performance Perovskite Solar Cells

In this work, different from the commonly explored strategy of incorporating a smaller cation, MA+ and Cs+ into FAPbI3 lattice to improve efficiency and stability, it is revealed that the introduction of phenylethylammonium iodide (PEAI) into FAPbI3 perovksite to form mixed cation FAxPEA1–xPbI3 can effectively enhance both phase and ambient stability of FAPbI3 as well as the resulting performance of the derived devices. From our experimental and theoretical calculation results, it is proposed that the larger PEA cation is capable of assembling on both the lattice surface and grain boundaries to form quais‐3D perovskite structures. The surrounding of PEA+ ions at the crystal grain boundaries not only can serve as molecular locks to tighten FAPbI3 domains but also passivate the surface defects to improve both phase and moisture stablity. Consequently, a high‐performance (PCE:17.7%) and ambient stable FAPbI3 solar cell could be developed.

[1]  M. Johnston,et al.  Formamidinium lead trihalide: a broadly tunable perovskite for efficient planar heterojunction solar cells , 2014 .

[2]  A. Jen,et al.  Current Challenges and Prospective Research for Upscaling Hybrid Perovskite Photovoltaics. , 2016, The journal of physical chemistry letters.

[3]  A. Jen,et al.  Navigating Organo-Lead Halide Perovskite Phase Space via Nucleation Kinetics toward a Deeper Understanding of Perovskite Phase Transformations and Structure-Property Relationships. , 2015, Small.

[4]  Qi Chen,et al.  Controllable self-induced passivation of hybrid lead iodide perovskites toward high performance solar cells. , 2014, Nano letters.

[5]  A. Jen,et al.  Effective interfacial layer to enhance efficiency of polymer solar cells via solution-processed fullerene-surfactants , 2012 .

[6]  Peng Gao,et al.  Mixed-organic-cation perovskite photovoltaics for enhanced solar-light harvesting. , 2014, Angewandte Chemie.

[7]  David B. Mitzi,et al.  Synthesis, Structure, and Properties of Organic‐Inorganic Perovskites and Related Materials , 2007 .

[8]  Nam-Gyu Park,et al.  Organometal Perovskite Light Absorbers Toward a 20% Efficiency Low-Cost Solid-State Mesoscopic Solar Cell , 2013 .

[9]  F. Fabregat‐Santiago,et al.  Diffusion–Recombination Impedance Model for Solar Cells with Disorder and Nonlinear Recombination , 2014 .

[10]  Chu-Chen Chueh,et al.  Abnormal Current-Voltage Hysteresis Induced by Reverse Bias in Organic-Inorganic Hybrid Perovskite Photovoltaics. , 2016, The journal of physical chemistry letters.

[11]  Shweta Agarwala,et al.  Perovskite Solar Cells: Beyond Methylammonium Lead Iodide. , 2015, The journal of physical chemistry letters.

[12]  Hyun Suk Jung,et al.  Perovskite solar cells: from materials to devices. , 2015, Small.

[13]  J. Berry,et al.  Stabilizing Perovskite Structures by Tuning Tolerance Factor: Formation of Formamidinium and Cesium Lead Iodide Solid-State Alloys , 2016 .

[14]  T. Bein,et al.  Stabilization of the Trigonal High-Temperature Phase of Formamidinium Lead Iodide. , 2015, The journal of physical chemistry letters.

[15]  J. Noh,et al.  Rational Strategies for Efficient Perovskite Solar Cells. , 2016, Accounts of chemical research.

[16]  Young Chan Kim,et al.  Compositional engineering of perovskite materials for high-performance solar cells , 2015, Nature.

[17]  D. Mitzi,et al.  Conducting tin halides with a layered organic-based perovskite structure , 1994, Nature.

[18]  N. Zhao,et al.  HPbI3: A New Precursor Compound for Highly Efficient Solution‐Processed Perovskite Solar Cells , 2015 .

[19]  Nripan Mathews,et al.  Advancements in perovskite solar cells: photophysics behind the photovoltaics , 2014 .

[20]  F. Fabregat‐Santiago,et al.  Characterization of nanostructured hybrid and organic solar cells by impedance spectroscopy. , 2011, Physical chemistry chemical physics : PCCP.

[21]  Thomas Bein,et al.  A Long-Term View on Perovskite Optoelectronics. , 2016, Accounts of chemical research.

[22]  Sergei Tretiak,et al.  High-efficiency solution-processed perovskite solar cells with millimeter-scale grains , 2015, Science.

[23]  Prashant V. Kamat,et al.  Band filling with free charge carriers in organometal halide perovskites , 2014, Nature Photonics.

[24]  Tingting Shi,et al.  Unique Properties of Halide Perovskites as Possible Origins of the Superior Solar Cell Performance , 2014, Advanced materials.

[25]  Yongbo Yuan,et al.  Ion Migration in Organometal Trihalide Perovskite and Its Impact on Photovoltaic Efficiency and Stability. , 2016, Accounts of chemical research.

[26]  Kangning Liang,et al.  Synthesis and Characterization of Organic−Inorganic Perovskite Thin Films Prepared Using a Versatile Two-Step Dipping Technique , 1998 .

[27]  Juan Bisquert,et al.  Mechanism of carrier accumulation in perovskite thin-absorber solar cells , 2013, Nature Communications.

[28]  Mohammad Khaja Nazeeruddin,et al.  Organohalide lead perovskites for photovoltaic applications , 2014 .

[29]  Namchul Cho,et al.  High‐Performance and Environmentally Stable Planar Heterojunction Perovskite Solar Cells Based on a Solution‐Processed Copper‐Doped Nickel Oxide Hole‐Transporting Layer , 2015, Advanced materials.

[30]  Aram Amassian,et al.  Ligand-Stabilized Reduced-Dimensionality Perovskites. , 2016, Journal of the American Chemical Society.

[31]  Yongbo Yuan,et al.  Origin and elimination of photocurrent hysteresis by fullerene passivation in CH3NH3PbI3 planar heterojunction solar cells , 2014, Nature Communications.

[32]  Ursula Rothlisberger,et al.  Entropic stabilization of mixed A-cation ABX3 metal halide perovskites for high performance perovskite solar cells , 2016 .

[33]  Paul Meredith,et al.  Organohalide Perovskites for Solar Energy Conversion. , 2016, Accounts of chemical research.

[34]  W. Jaegermann,et al.  Hybrid Perovskite/Perovskite Heterojunction Solar Cells. , 2016, ACS nano.

[35]  Anders Hagfeldt,et al.  Cesium-containing triple cation perovskite solar cells: improved stability, reproducibility and high efficiency† †Electronic supplementary information (ESI) available. See DOI: 10.1039/c5ee03874j Click here for additional data file. , 2016, Energy & environmental science.

[36]  Ni Zhao,et al.  The Role of Chlorine in the Formation Process of “CH3NH3PbI3‐xClx” Perovskite , 2014 .

[37]  D. Mitzi,et al.  Inorganic Perovskites : Structural Versatility for Functional Materials Design , 2016 .

[38]  Henry J Snaith,et al.  Metal-halide perovskites for photovoltaic and light-emitting devices. , 2015, Nature nanotechnology.

[39]  David B. Mitzi,et al.  Templating and structural engineering in organic–inorganic perovskites , 2001 .

[40]  J. Berry,et al.  In situ investigation of the formation and metastability of formamidinium lead tri-iodide perovskite solar cells , 2016 .

[41]  A. Jen,et al.  Effects of formamidinium and bromide ion substitution in methylammonium lead triiodide toward high-performance perovskite solar cells , 2016 .

[42]  M. Grätzel,et al.  Sequential deposition as a route to high-performance perovskite-sensitized solar cells , 2013, Nature.

[43]  Peng Gao,et al.  Efficient luminescent solar cells based on tailored mixed-cation perovskites , 2016, Science Advances.

[44]  Juan Bisquert,et al.  Properties of Contact and Bulk Impedances in Hybrid Lead Halide Perovskite Solar Cells Including Inductive Loop Elements , 2016 .

[45]  Nam-Gyu Park,et al.  Organolead Halide Perovskite: New Horizons in Solar Cell Research , 2014 .

[46]  P. Umari,et al.  Cation-induced band-gap tuning in organohalide perovskites: interplay of spin-orbit coupling and octahedra tilting. , 2014, Nano letters.

[47]  Juan Bisquert,et al.  General working principles of CH3NH3PbX3 perovskite solar cells. , 2014, Nano letters.

[48]  Sang Il Seok,et al.  High-performance photovoltaic perovskite layers fabricated through intramolecular exchange , 2015, Science.

[49]  H. Snaith.  Perovskites: The Emergence of a New Era for Low-Cost, High-Efficiency Solar Cells , 2013 .

[50]  Gang Li,et al.  Single Crystal Formamidinium Lead Iodide (FAPbI3): Insight into the Structural, Optical, and Electrical Properties , 2016, Advanced materials.

[51]  Nam-Gyu Park,et al.  High‐Efficiency Perovskite Solar Cells Based on the Black Polymorph of HC(NH2)2PbI3 , 2014, Advanced materials.

[52]  S. Mhaisalkar,et al.  Nanostructuring Mixed‐Dimensional Perovskites: A Route Toward Tunable, Efficient Photovoltaics , 2016, Advanced materials.

[53]  A. Petrozza,et al.  Photophysics of Hybrid Lead Halide Perovskites: The Role of Microstructure. , 2016, Accounts of chemical research.

[54]  Peng Gao,et al.  Impedance spectroscopic analysis of lead iodide perovskite-sensitized solid-state solar cells. , 2014, ACS nano.

[55]  Jun Lin,et al.  Layered organic-inorganic hybrid perovskites: structure, optical properties, film preparation, patterning and templating engineering , 2010 .

[56]  Su-Huai Wei,et al.  Halide perovskite materials for solar cells: a theoretical review , 2015 .

[57]  J. Teuscher,et al.  Efficient Hybrid Solar Cells Based on Meso-Superstructured Organometal Halide Perovskites , 2012, Science.

[58]  Alex K.-Y. Jen,et al.  Recent progress and perspective in solution-processed Interfacial materials for efficient and stable polymer and organometal perovskite solar cells , 2015 .

[59]  Omar K Farha,et al.  2D Homologous Perovskites as Light-Absorbing Materials for Solar Cell Applications. , 2015, Journal of the American Chemical Society.

[60]  M. Green,et al.  The emergence of perovskite solar cells , 2014, Nature Photonics.

[61]  Feng Liu,et al.  Kinetics of Ion Transport in Perovskite Active Layers and Its Implications for Active Layer Stability. , 2015, Journal of the American Chemical Society.

[62]  Juan Bisquert,et al.  Theory of the Impedance of Electron Diffusion and Recombination in a Thin Layer , 2002 .

[63]  M. Saidaminov,et al.  Making and Breaking of Lead Halide Perovskites. , 2016, Accounts of chemical research.