In:
Solar RRL, Wiley, Vol. 2, No. 11 ( 2018-11)
Abstract:
Owing to their rational distribution and adequate use of the solar spectrum and a high open‐circuit voltage, perovskite/silicon‐heterojunction (SHJ) tandem solar cells can exceed the theoretical limit of efficiency for crystalline silicon solar cells. To improve the performance of perovskite/SHJ tandem solar cells, the distribution of the solar spectrum and current matching between sub‐cells must be examined and optimized. This study employs mixed perovskite as the top cell, which is prepared with pure N, N ‐dimethyl formamide (DMF), pure dimethyl sulfoxide (DMSO), and mixtures of these components in different volume ratios. The effect of different solvents on surface structure and the photoelectric properties of FACs perovskite materials are systematically examined. When the volume fraction of DMSO is 40%, a smooth, well passivated, high‐quality perovskite film is obtained. Most importantly, light absorbance and transmittance are balanced by applying solvent engineering to optimize perovskite films in the tandem devices. This method can be further extended to a more complicated FAMACs perovskite/SHJ by delivering a power conversion efficiency of 22.80%. This study concludes that solvent engineering is an effective and simple method for modifying the performance of monolithic perovskite/silicon tandem devices.
Type of Medium:
Online Resource
ISSN:
2367-198X
,
2367-198X
DOI:
10.1002/solr.201800176
Language:
English
Publisher:
Wiley
Publication Date:
2018
detail.hit.zdb_id:
2882014-9
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