A peri-Xanthenoxanthene Centered Columnar-Stacking Organic Semiconductor for Efficient, Photothermally Stable Perovskite Solar Cells.

Modulating the structure and property of hole-transporting organic semiconductors is of paramount importance for high-efficiency and stable perovskite solar cells (PSCs). This work reports a low-cost peri-xanthenoxanthene based small-molecule P1, which is prepared at a total yield of 82 % using a three-step synthetic route from the low-cost starting material 2-naphthol. P1 molecules stack in one-dimensional columnar arrangement characteristic of strong intermolecular π-π interactions, contributing to the formation of a solution-processed, semicrystalline thin-film exhibiting one order of magnitude higher hole mobility than the amorphous one based on the state-of-the art hole-transporter, 2,2-7,7-tetrakis(N,N'-di-paramethoxy-phenylamine 9,9'-spirobifluorene (spiro-OMeTAD). PSCs employing P1 as the hole-transporting layer attain a high efficiency of 19.8 % at the standard AM 1.5 G conditions, and good long-term stability under continuous full sunlight exposure at 40 °C.

[1]  L. Wan,et al.  A Two-Dimensional Hole-Transporting Material for High-Performance Perovskite Solar Cells with 20 % Average Efficiency. , 2018, Angewandte Chemie.

[2]  Tae-Youl Yang,et al.  A fluorene-terminated hole-transporting material for highly efficient and stable perovskite solar cells , 2018, Nature Energy.

[3]  Rui Zhu,et al.  Enhanced photovoltage for inverted planar heterojunction perovskite solar cells , 2018, Science.

[4]  Peter Hacke,et al.  Enabling reliability assessments of pre-commercial perovskite photovoltaics with lessons learned from industrial standards , 2018, Nature Energy.

[5]  Eiichi Nakamura,et al.  Disodium Benzodipyrrole Sulfonate as Neutral Hole-Transporting Materials for Perovskite Solar Cells. , 2018, Journal of the American Chemical Society.

[6]  Yiwang Chen,et al.  Recent Progress on the Long‐Term Stability of Perovskite Solar Cells , 2018, Advanced science.

[7]  Michael Grätzel,et al.  Systematic investigation of the impact of operation conditions on the degradation behaviour of perovskite solar cells , 2018, Nature Energy.

[8]  Neha Arora,et al.  Perovskite solar cells with CuSCN hole extraction layers yield stabilized efficiencies greater than 20% , 2017, Science.

[9]  Yin Xiao,et al.  Over 20% PCE perovskite solar cells with superior stability achieved by novel and low-cost hole-transporting materials , 2017 .

[10]  A. Hagfeldt,et al.  Spontaneous crystal coalescence enables highly efficient perovskite solar cells , 2017 .

[11]  G. Boschloo,et al.  Incorporation of Counter Ions in Organic Molecules: New Strategy in Developing Dopant‐Free Hole Transport Materials for Efficient Mixed‐Ion Perovskite Solar Cells , 2017 .

[12]  A. Jen,et al.  Tailor-Making Low-Cost Spiro[fluorene-9,9′-xanthene]-Based 3D Oligomers for Perovskite Solar Cells , 2017 .

[13]  T. Kamei,et al.  Cu-Catalyzed Aerobic Oxidative C-H/C-O Cyclization of 2,2'-Binaphthols: Practical Synthesis of PXX Derivatives. , 2017, Organic letters.

[14]  N. Park,et al.  Effect of Selective Contacts on the Thermal Stability of Perovskite Solar Cells. , 2017, ACS applied materials & interfaces.

[15]  L. Quan,et al.  SOLAR CELLS: Efficient and stable solution‐processed planar perovskite solar cells via contact passivation , 2017 .

[16]  Oh Kyu Kwon,et al.  Indolo[3,2-b]indole-based crystalline hole-transporting material for highly efficient perovskite solar cells , 2016, Chemical science.

[17]  X. Zhan,et al.  Triarylamine: Versatile Platform for Organic, Dye-Sensitized, and Perovskite Solar Cells. , 2016, Chemical reviews.

[18]  S. Kazim,et al.  Lochtransportmaterialien für Perowskit‐Solarzellen , 2016 .

[19]  M. Grätzel,et al.  Hole-Transport Materials for Perovskite Solar Cells. , 2016, Angewandte Chemie.

[20]  Anders Hagfeldt,et al.  Incorporation of rubidium cations into perovskite solar cells improves photovoltaic performance , 2016, Science.

[21]  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.

[22]  M. Grätzel,et al.  A low-cost spiro[fluorene-9,9′-xanthene]-based hole transport material for highly efficient solid-state dye-sensitized solar cells and perovskite solar cells , 2016 .

[23]  Peng Gao,et al.  A molecularly engineered hole-transporting material for efficient perovskite solar cells , 2016, Nature Energy.

[24]  M. Grätzel,et al.  Triazatruxene-Based Hole Transporting Materials for Highly Efficient Perovskite Solar Cells. , 2015, Journal of the American Chemical Society.

[25]  Wei Chen,et al.  Efficient and stable large-area perovskite solar cells with inorganic charge extraction layers , 2015, Science.

[26]  Jinli Yang,et al.  Investigation of CH3NH3PbI3 degradation rates and mechanisms in controlled humidity environments using in situ techniques. , 2015, ACS nano.

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

[28]  Bo Qu,et al.  A hydrophobic hole transporting oligothiophene for planar perovskite solar cells with improved stability. , 2014, Chemical communications.

[29]  Xudong Yang,et al.  A dopant-free hole-transporting material for efficient and stable perovskite solar cells , 2014 .

[30]  Yang Yang,et al.  Interface engineering of highly efficient perovskite solar cells , 2014, Science.

[31]  Young Chan Kim,et al.  o-Methoxy substituents in spiro-OMeTAD for efficient inorganic-organic hybrid perovskite solar cells. , 2014, Journal of the American Chemical Society.

[32]  M. Grätzel,et al.  A simple 3,4-ethylenedioxythiophene based hole-transporting material for perovskite solar cells. , 2014, Angewandte Chemie.

[33]  M. Grätzel,et al.  Title: Long-Range Balanced Electron and Hole Transport Lengths in Organic-Inorganic CH3NH3PbI3 , 2017 .

[34]  Henry J. Snaith,et al.  Efficient planar heterojunction perovskite solar cells by vapour deposition , 2013, Nature.

[35]  F. Miao,et al.  Hopping transport through defect-induced localized states in molybdenum disulphide , 2013, Nature Communications.

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

[37]  N. Park,et al.  Lead Iodide Perovskite Sensitized All-Solid-State Submicron Thin Film Mesoscopic Solar Cell with Efficiency Exceeding 9% , 2012, Scientific Reports.

[38]  Tsutomu Miyasaka,et al.  Organometal halide perovskites as visible-light sensitizers for photovoltaic cells. , 2009, Journal of the American Chemical Society.

[39]  Josef Salbeck,et al.  Solid-state dye-sensitized mesoporous TiO2 solar cells with high photon-to-electron conversion efficiencies , 1998, Nature.

[40]  T. Inabe,et al.  Electrical properties and constitution of several low-resistivity iodine complexes. , 1979 .