CH3NH3PbI3 and CH3NH3PbI3–xClx in Planar or Mesoporous Perovskite Solar Cells: Comprehensive Insight into the Dependence of Performance on Architecture

In perovskite solar cells (PSCs), issues of compatibility between the photoabsorber and the cell architecture arise. In this work, we systematically demonstrated the characteristics of PSCs with an organometal halide, CH3NH3PbI3 or CH3NH3PbI3–xClx, in a planar or mesoporous architecture, and the dependence of the cell photovoltaic performance on the architecture was illustrated in detail. In addition to the inherent photoelectric characteristics, CH3NH3PbI3 and CH3NH3PbI3–xClx also differ in other aspects, such as light absorption, crystallinity, surface coverage, and dissociation of the photogenerated electrons. For PSCs with CH3NH3PbI3, the mesoporous ones gave high power conversion efficiencies (PCE) of up to 14.05%, which is much higher than those of the planar ones (up to 6.76%). For PSCs with CH3NH3PbI3–xClx, the planar and mesoporous devices exhibited PCEs of up to 12.67% and 7.87%, respectively, quite in contrast with the case of CH3NH3PbI3.

[1]  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.

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

[3]  Qi Chen,et al.  Planar heterojunction perovskite solar cells via vapor-assisted solution process. , 2014, Journal of the American Chemical Society.

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

[5]  Peng Gao,et al.  Mesoscopic CH3NH3PbI3/TiO2 heterojunction solar cells. , 2012, Journal of the American Chemical Society.

[6]  Yossi Rosenwaks,et al.  Why lead methylammonium tri-iodide perovskite-based solar cells require a mesoporous electron transporting scaffold (but not necessarily a hole conductor). , 2014, Nano letters.

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

[8]  Lioz Etgar,et al.  Depleted hole conductor-free lead halide iodide heterojunction solar cells , 2013 .

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

[10]  Nam-Gyu Park,et al.  6.5% efficient perovskite quantum-dot-sensitized solar cell. , 2011, Nanoscale.

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

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

[13]  Peng Gao,et al.  Effect of Annealing Temperature on Film Morphology of Organic–Inorganic Hybrid Pervoskite Solid‐State Solar Cells , 2014 .

[14]  J. Noh,et al.  Chemical management for colorful, efficient, and stable inorganic-organic hybrid nanostructured solar cells. , 2013, Nano letters.

[15]  Mercouri G Kanatzidis,et al.  Semiconducting tin and lead iodide perovskites with organic cations: phase transitions, high mobilities, and near-infrared photoluminescent properties. , 2013, Inorganic chemistry.

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

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

[18]  Omar K. Farha,et al.  Remnant PbI2, an unforeseen necessity in high-efficiency hybrid perovskite-based solar cells?a) , 2014 .

[19]  M. Kanatzidis,et al.  All-solid-state dye-sensitized solar cells with high efficiency , 2012, Nature.

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

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

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

[23]  Porun Liu,et al.  High-Performance TiO2 Photoanode with an Efficient Electron Transport Network for Dye-Sensitized Solar Cells , 2009 .

[24]  Alain Goriely,et al.  Morphological Control for High Performance, Solution‐Processed Planar Heterojunction Perovskite Solar Cells , 2014 .

[25]  Clemens Burda,et al.  Femtosecond time-resolved transient absorption spectroscopy of CH3NH3PbI3 perovskite films: evidence for passivation effect of PbI2. , 2014, Journal of the American Chemical Society.

[26]  Kun Zhang,et al.  Retarding the crystallization of PbI2 for highly reproducible planar-structured perovskite solar cells via sequential deposition , 2014 .

[27]  Fan Zuo,et al.  Additive Enhanced Crystallization of Solution‐Processed Perovskite for Highly Efficient Planar‐Heterojunction Solar Cells , 2014, Advanced materials.