Modified Antisolvent Method for Improving the Performance and Stability of Triple-Cation Perovskite Solar Cells

Abstract

Antisolvent crystallization is known as an effective approach for the deposition of pinhole-free solution-processed perovskite layers for high-performance solar cells. Here, we introduce a modified antisolvent dripping method by adding tetra ethyl orthosilicate (TEOS) into chlorobenzene as a conventional antisolvent. Through TEOS modification, perovskite solar cells show efficiencies as high as 16% with more than 85% retention after 290 h storage at ambient conditions in comparison to 20% in pristine cells. This significant enhancement in efficiency and stability mainly related to the decrement of the density of surface defects, which is confirmed by considerably enhanced photoluminescence of perovskite layers. Also, electrochemical impedance spectroscopy results show lower charge recombination at interfaces in modified cells. Regarding the obtained results, our modified antisolvent approach is a simple and promising route to prepare high-quality perovskite layers for solar cell applications.

Solvent–antisolvent interactions in metal halide perovskites

“…This example and other similar works illustrate the benefits of utilising the antisolvent step to not only guide crystallisation, but simultaneously passivate or functionalise the surface of the perovskite layer. 123,124…”

“…This example and other similar works illustrate the benefits of utilising the antisolvent step to not only guide crystallisation, but simultaneously passivate or functionalise the surface of the perovskite layer. 123,124 Beyond the fundamental understanding of crystallisation and film formation processes of solvent engineered films and the engineering of antisolvent mixtures and compositions, it is important to consider the applicability of the approach for large-scale production of perovskite optoelectronics. While the use of antisolvents is well established for small area devices, its application on large-scale devices leads to significant engineering and environmental challenges.…”

Controlling Surface Morphology of Ag-doped ZnO as a Buffer Layer by Dispersion Engineering in Planar Perovskite Solar Cells

“…For instance, the inorganic cesium (Cs) cation has gained attention in triple-cation perovskites. The triple-cation perovskites containing Cs exhibit high thermal and moisture stability [9][10][11][12][13]. One of the most effective triple-cation mixed-halide perovskites to enhance light absorption and moisture resistance is Cs0.05(MA0.17FA0.83)0.95Pb(I0.83Br0.17)3 [14][15][16][17].…”

Lamination methods for the fabrication of perovskite and organic photovoltaics

“…Extensive research on photovoltaic (PV) technologies has led to new low-cost, high-performance third-generation solar cells such as dye-sensitized solar cells (DSSCs), [1][2][3][4][5][6] quantum-dot solar cells (QDSCs), 7 organic photovoltaics (OPVs), [8][9][10] and perovskite solar cells (PSCs). [11][12][13][14][15][16][17][18] However, most of these emerging technologies are still in the research phase and require more developments to reach commercial applications. 19,20 Among third-generation solar cells, PSCs and OPVs could be turned into printable technologies as they have reached a suitable power conversion efficiency (PCE) and stability.…”