Methylammonium Chloride as a Double-Edged Sword for Efficient and Stable Perovskite Solar Cells.

The additive engineering strategy promotes the efficiency of solution-processed perovskite solar cells (PSCs) over 25%. However, compositional heterogeneity and structural disorders occur in perovskite films with the addition of specific additives, making it imperative to understand the detrimental impact of additives on film quality and device performance. In this work, the double-edged sword effects of the methylammonium chloride (MACl) additive on the properties of methylammonium lead mixed-halide perovskite (MAPbI3-x Clx ) films and PSCs are demonstrated. MAPbI3-x Clx films suffer from undesirable morphology transition during annealing, and its impacts on the film quality including morphology, optical properties, structure, and defect evolution are systematically investigated, as well as the power conversion efficiency (PCE) evolution for related PSCs. The FAX (FA = formamidinium, X = I, Br, and Ac) post-treatment strategy is developed to inhibit the morphology transition and suppress defects by compensating for the loss of the organic components, a champion PCE of 21.49% with an impressive open-circuit voltage of 1.17 V is obtained, and remains over 95% of the initial efficiency after storing over 1200 hours. This study elucidates that understanding the additive-induced detrimental effects in halide perovskites is critical to achieve the efficient and stable PSCs.

[1]  Tingting Niu,et al.  Perovskite solar cells based on screen-printed thin films , 2022, Nature.

[2]  M. Filoche,et al.  The Electronic Disorder Landscape of Mixed Halide Perovskites , 2022, ACS energy letters.

[3]  T. Conard,et al.  Critical Role of Perovskite Film Stoichiometry in Determining Solar Cell Operational Stability: a Study on the Effects of Volatile A-Cation Additives. , 2022, ACS applied materials & interfaces.

[4]  Tongle Bu,et al.  Modulating crystal growth of formamidinium–caesium perovskites for over 200 cm2 photovoltaic sub-modules , 2022, Nature Energy.

[5]  Xingzhu Wang,et al.  Highly Orientational Order Perovskite Induced by In situ-generated 1D Perovskitoid for Efficient and Stable Printable Photovoltaics. , 2022, Small.

[6]  Z. Ren,et al.  Manipulating Crystallization Kinetics in High‐Performance Blade‐Coated Perovskite Solar Cells via Cosolvent‐Assisted Phase Transition , 2022, Advanced materials.

[7]  N. Zheng,et al.  Intermediate Chemistry of Halide Perovskites: Origin, Evolution, and Application. , 2022, The journal of physical chemistry letters.

[8]  Jianping Zhang,et al.  Lewis Base Plays a Double-Edged-Sword Role in Trap State Engineering of Perovskite Polycrystals. , 2022, The journal of physical chemistry letters.

[9]  Meng Li,et al.  In Situ Methylammonium Chloride-Assisted Perovskite Crystallization Strategy for High-Performance Solar Cells , 2022, ACS Materials Letters.

[10]  Jinsong Huang,et al.  Evolution of defects during the degradation of metal halide perovskite solar cells under reverse bias and illumination , 2021, Nature Energy.

[11]  Yang Yang,et al.  Performance-limiting formation dynamics in mixed-halide perovskites , 2021, Science advances.

[12]  Essa A. Alharbi,et al.  Methylammonium Triiodide for Defect Engineering of High-Efficiency Perovskite Solar Cells , 2021, ACS Energy Letters.

[13]  N. Park,et al.  Effect of Chemical Bonding Nature of Post-Treatment Materials on Photovoltaic Performance of Perovskite Solar Cells , 2021, ACS Energy Letters.

[14]  Zhigang Zang,et al.  Interfacial Defect Passivation and Stress Release via Multi-Active-Site Ligand Anchoring Enables Efficient and Stable Methylammonium-Free Perovskite Solar Cells , 2021, ACS Energy Letters.

[15]  Yang Zhou,et al.  Defect activity in metal halide perovskites with wide and narrow bandgap , 2021, Nature Reviews Materials.

[16]  X. Gu,et al.  Spontaneously supersaturated nucleation strategy for high reproducible and efficient perovskite solar cells , 2021 .

[17]  Bumjoon J. Kim,et al.  Highly Efficient and Stable Perovskite Solar Cells Enabled by Low Cost Industrial Organic Pigment Coating. , 2020, Angewandte Chemie.

[18]  Y. Xiang,et al.  Coordination modulated crystallization and defect passivation in high quality perovskite film for efficient solar cells , 2020 .

[19]  Dong Suk Kim,et al.  Stable perovskite solar cells with efficiency exceeding 24.8% and 0.3-V voltage loss , 2020, Science.

[20]  Jun Hee Lee,et al.  Efficient, stable solar cells by using inherent bandgap of α-phase formamidinium lead iodide , 2019, Science.

[21]  Qiaoling Xu,et al.  Spontaneous low-temperature crystallization of α-FAPbI3 for highly efficient perovskite solar cells. , 2019, Science bulletin.

[22]  Dong Suk Kim,et al.  Methylammonium Chloride Induces Intermediate Phase Stabilization for Efficient Perovskite Solar Cells , 2019, Joule.

[23]  E. Giannakaki,et al.  Μethylammonium Chloride: A Key Additive for Highly Efficient, Stable, and Up‐Scalable Perovskite Solar Cells , 2019, ENERGY & ENVIRONMENTAL MATERIALS.

[24]  Z. Yin,et al.  Surface passivation of perovskite film for efficient solar cells , 2019, Nature Photonics.

[25]  Ying Shirley Meng,et al.  Homogenized halides and alkali cation segregation in alloyed organic-inorganic perovskites , 2019, Science.

[26]  Bo Li,et al.  Significant Stability Enhancement of Perovskite Solar Cells by Facile Adhesive Encapsulation , 2018, The Journal of Physical Chemistry C.

[27]  A. Walsh,et al.  Taking Control of Ion Transport in Halide Perovskite Solar Cells , 2018, ACS Energy Letters.

[28]  U. Steiner,et al.  Flash Infrared Annealing for Antisolvent‐Free Highly Efficient Perovskite Solar Cells , 2018 .

[29]  Xudong Yang,et al.  A solvent- and vacuum-free route to large-area perovskite films for efficient solar modules , 2017, Nature.

[30]  Kyung Sun Park,et al.  Wafer-scale single-crystal perovskite patterned thin films based on geometrically-confined lateral crystal growth , 2017, Nature Communications.

[31]  M. A. EI-Sayed,et al.  Meniscus-assisted solution printing of large-grained perovskite films for high-efficiency solar cells , 2017, Nature Communications.

[32]  T. Noda,et al.  Thermally Stable MAPbI3 Perovskite Solar Cells with Efficiency of 19.19% and Area over 1 cm2 achieved by Additive Engineering , 2017, Advanced materials.

[33]  Jay B. Patel,et al.  Crystallization Kinetics and Morphology Control of Formamidinium–Cesium Mixed‐Cation Lead Mixed‐Halide Perovskite via Tunability of the Colloidal Precursor Solution , 2017, Advanced materials.

[34]  M. Wasielewski,et al.  Enhanced Efficiency of Hot‐Cast Large‐Area Planar Perovskite Solar Cells/Modules Having Controlled Chloride Incorporation , 2017 .

[35]  Dongsheng Xu,et al.  Quantitative Doping of Chlorine in Formamidinium Lead Trihalide (FAPbI3−xClx) for Planar Heterojunction Perovskite Solar Cells , 2017 .

[36]  Mohammad Khaja Nazeeruddin,et al.  Intrinsic Halide Segregation at Nanometer Scale Determines the High Efficiency of Mixed Cation/Mixed Halide Perovskite Solar Cells. , 2016, Journal of the American Chemical Society.

[37]  A. Jen,et al.  Defect Passivation of Organic–Inorganic Hybrid Perovskites by Diammonium Iodide toward High-Performance Photovoltaic Devices , 2016 .

[38]  D. Cahen,et al.  Conversion of Single Crystalline PbI2 to CH3NH3PbI3: Structural Relations and Transformation Dynamics , 2016 .

[39]  G. Cao,et al.  Controlled growth of textured perovskite films towards high performance solar cells , 2016 .

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

[41]  Jinsong Huang,et al.  Chloride Incorporation Process in CH₃NH₃PbI(3-x)Cl(x) Perovskites via Nanoscale Bandgap Maps. , 2015, Nano letters.

[42]  Erkki Alarousu,et al.  CH3NH3PbCl3 Single Crystals: Inverse Temperature Crystallization and Visible-Blind UV-Photodetector. , 2015, The journal of physical chemistry letters.

[43]  Yani Chen,et al.  Non-Thermal Annealing Fabrication of Efficient Planar Perovskite Solar Cells with Inclusion of NH4Cl , 2015 .

[44]  Christopher J. Tassone,et al.  Chloride in lead chloride-derived organo-metal halides for perovskite-absorber solar cells , 2014 .

[45]  Jinsong Huang,et al.  Solvent Annealing of Perovskite‐Induced Crystal Growth for Photovoltaic‐Device Efficiency Enhancement , 2014, Advanced materials.

[46]  Laura M. Herz,et al.  Electron-Hole Diffusion Lengths Exceeding 1 Micrometer in an Organometal Trihalide Perovskite Absorber , 2013, Science.

[47]  J. Nelson,et al.  On the Differences between Dark and Light Ideality Factor in Polymer:Fullerene Solar Cells , 2013 .

[48]  D. F. Swinehart,et al.  The Beer-Lambert Law , 1962 .