One-step, low-temperature deposited perovskite solar cell utilizing small molecule additive

Abstract. In the current study, the perovskite absorber (CH3NH3PbI3) is processed via one-step deposition employing the small molecule additive, BmPyPhB, which can be dissolved in dimethylformamide along with precursors. Here, 1,3-Bis[3,5-di(pyridin-3-yl)phenyl]benzene (BmPyPhB) functions as the morphology controller to introduce an intermediate phase during perovskite film growth, which allows well-defined and precrystallized domains formed before the annealing treatment. Furthermore, a chloroform solvent wash procedure is applied afterward to remove BmPyPhB from perovskite without damaging the predetermined morphology. Thus, postannealing as low as 100°C for 5 min can achieve the optimal power conversion efficiency of 8% in a planar-structured inverted solar cell.

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

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

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

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

[5]  Gang Li,et al.  Visibly transparent polymer solar cells produced by solution processing. , 2012, ACS nano.

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

[7]  Gang Li,et al.  High-performance semi-transparent polymer solar cells possessing tandem structures , 2013 .

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

[9]  H. Snaith,et al.  Low-temperature processed meso-superstructured to thin-film perovskite solar cells , 2013 .

[10]  Tzung-Fang Guo,et al.  CH3NH3PbI3 Perovskite/Fullerene Planar‐Heterojunction Hybrid Solar Cells , 2013, Advanced materials.

[11]  J. Noh,et al.  Efficient inorganic–organic hybrid heterojunction solar cells containing perovskite compound and polymeric hole conductors , 2013, Nature Photonics.

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

[13]  Leone Spiccia,et al.  A fast deposition-crystallization procedure for highly efficient lead iodide perovskite thin-film solar cells. , 2014, Angewandte Chemie.

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

[15]  Liming Ding,et al.  An 80.11% FF record achieved for perovskite solar cells by using the NH4Cl additive. , 2014, Nanoscale.

[16]  Sang Il Seok,et al.  Solvent engineering for high-performance inorganic-organic hybrid perovskite solar cells. , 2014, Nature materials.

[17]  Yang Yang,et al.  An Efficient Triple‐Junction Polymer Solar Cell Having a Power Conversion Efficiency Exceeding 11% , 2014, Advanced materials.

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