Reducing surficial and interfacial defects by thiocyanate ionic liquid additive and ammonium formate passivator for efficient and stable perovskite solar cells
Organic-inorganic metal halide perovskites have attained extensive attention owing to their outstanding photovoltaic performances, but the existence of numerous defects in crystalline perovskites is still a serious constraint for the further development of perovskite solar cells (PSCs). In particula...
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creator | Zhu, Mengfei Xia, Yuren Qin, Lina Zhang, Kaiqiang Liang, Junchuan Zhao, Cheng Hong, Daocheng Jiang, Minghang Song, Xinmei Wei, Jie Zhang, Pengbo Tian, Yuxi Jin, Zhong |
description | Organic-inorganic metal halide perovskites have attained extensive attention owing to their outstanding photovoltaic performances, but the existence of numerous defects in crystalline perovskites is still a serious constraint for the further development of perovskite solar cells (PSCs). In particular, the rapid crystallization guided by anti-solvents leads to plenty of surficial and interfacial defects in perovskite films. Herein, we report the adoption of a pseudo-halide anion based ionic liquid additive, 1-butyl-3-methylimidazolium thiocyanate (BMIMSCN) for growing ternary cation (CsFAMA, where FA = formamidinium and MA = methylammonium) perovskites with large-scale crystal grains and strong preferential orientation via the enhanced Ostwald ripening. Meanwhile, a novel halide-free passivator, benzylammonium formate (BAFa), was employed as a buffering layer on the perovskite films to suppress surface-dominated charge recombination. As a result, the cooperative effects of BMIMSCN additive and BAFa passivator lead to significant enhancements on fluorescence lifetime (from 79.41 to 201.01 ns), open-circuit voltage (from 1.13 to 1.19 V), and photoelectric conversion efficiency (from 18.90% to 22.33%). Moreover, the BMIMSCN/BAFa-CsFAMA PSCs demonstrated greatly improved stability against moisture and heat. This work suggests a promising strategy to improve the quality of perovskite materials via reducing the surficial and interfacial defects by the synergistic effects of lattice doping and interface engineering. |
doi_str_mv | 10.1007/s12274-023-5403-x |
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In particular, the rapid crystallization guided by anti-solvents leads to plenty of surficial and interfacial defects in perovskite films. Herein, we report the adoption of a pseudo-halide anion based ionic liquid additive, 1-butyl-3-methylimidazolium thiocyanate (BMIMSCN) for growing ternary cation (CsFAMA, where FA = formamidinium and MA = methylammonium) perovskites with large-scale crystal grains and strong preferential orientation via the enhanced Ostwald ripening. Meanwhile, a novel halide-free passivator, benzylammonium formate (BAFa), was employed as a buffering layer on the perovskite films to suppress surface-dominated charge recombination. As a result, the cooperative effects of BMIMSCN additive and BAFa passivator lead to significant enhancements on fluorescence lifetime (from 79.41 to 201.01 ns), open-circuit voltage (from 1.13 to 1.19 V), and photoelectric conversion efficiency (from 18.90% to 22.33%). Moreover, the BMIMSCN/BAFa-CsFAMA PSCs demonstrated greatly improved stability against moisture and heat. This work suggests a promising strategy to improve the quality of perovskite materials via reducing the surficial and interfacial defects by the synergistic effects of lattice doping and interface engineering.</description><identifier>ISSN: 1998-0124</identifier><identifier>EISSN: 1998-0000</identifier><identifier>DOI: 10.1007/s12274-023-5403-x</identifier><language>eng</language><publisher>Beijing: Tsinghua University Press</publisher><subject>Ammonium ; Atomic/Molecular Structure and Spectra ; Biomedicine ; Biotechnology ; Chemistry and Materials Science ; Condensed Matter Physics ; Crystal defects ; Crystallization ; Efficiency ; Interfaces ; Ionic liquids ; Ions ; Materials Science ; Metal halides ; Moisture effects ; Nanotechnology ; Open circuit voltage ; Ostwald ripening ; Perovskites ; Photoelectricity ; Photovoltaic cells ; Photovoltaics ; Recombination ; Research Article ; Science ; Solar cells ; Synergistic effect ; Thiocyanates</subject><ispartof>Nano research, 2023-05, Vol.16 (5), p.6849-6858</ispartof><rights>Tsinghua University Press 2023</rights><rights>Tsinghua University Press 2023.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c316t-b2dd4c4bdb6b3ba3c10632b67c78600e9c7dfaf6095a54083a85186fc34ad1b73</citedby><cites>FETCH-LOGICAL-c316t-b2dd4c4bdb6b3ba3c10632b67c78600e9c7dfaf6095a54083a85186fc34ad1b73</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s12274-023-5403-x$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s12274-023-5403-x$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,776,780,27901,27902,41464,42533,51294</link.rule.ids></links><search><creatorcontrib>Zhu, Mengfei</creatorcontrib><creatorcontrib>Xia, Yuren</creatorcontrib><creatorcontrib>Qin, Lina</creatorcontrib><creatorcontrib>Zhang, Kaiqiang</creatorcontrib><creatorcontrib>Liang, Junchuan</creatorcontrib><creatorcontrib>Zhao, Cheng</creatorcontrib><creatorcontrib>Hong, Daocheng</creatorcontrib><creatorcontrib>Jiang, Minghang</creatorcontrib><creatorcontrib>Song, Xinmei</creatorcontrib><creatorcontrib>Wei, Jie</creatorcontrib><creatorcontrib>Zhang, Pengbo</creatorcontrib><creatorcontrib>Tian, Yuxi</creatorcontrib><creatorcontrib>Jin, Zhong</creatorcontrib><title>Reducing surficial and interfacial defects by thiocyanate ionic liquid additive and ammonium formate passivator for efficient and stable perovskite solar cells</title><title>Nano research</title><addtitle>Nano Res</addtitle><description>Organic-inorganic metal halide perovskites have attained extensive attention owing to their outstanding photovoltaic performances, but the existence of numerous defects in crystalline perovskites is still a serious constraint for the further development of perovskite solar cells (PSCs). In particular, the rapid crystallization guided by anti-solvents leads to plenty of surficial and interfacial defects in perovskite films. Herein, we report the adoption of a pseudo-halide anion based ionic liquid additive, 1-butyl-3-methylimidazolium thiocyanate (BMIMSCN) for growing ternary cation (CsFAMA, where FA = formamidinium and MA = methylammonium) perovskites with large-scale crystal grains and strong preferential orientation via the enhanced Ostwald ripening. Meanwhile, a novel halide-free passivator, benzylammonium formate (BAFa), was employed as a buffering layer on the perovskite films to suppress surface-dominated charge recombination. As a result, the cooperative effects of BMIMSCN additive and BAFa passivator lead to significant enhancements on fluorescence lifetime (from 79.41 to 201.01 ns), open-circuit voltage (from 1.13 to 1.19 V), and photoelectric conversion efficiency (from 18.90% to 22.33%). Moreover, the BMIMSCN/BAFa-CsFAMA PSCs demonstrated greatly improved stability against moisture and heat. This work suggests a promising strategy to improve the quality of perovskite materials via reducing the surficial and interfacial defects by the synergistic effects of lattice doping and interface engineering.</description><subject>Ammonium</subject><subject>Atomic/Molecular Structure and Spectra</subject><subject>Biomedicine</subject><subject>Biotechnology</subject><subject>Chemistry and Materials Science</subject><subject>Condensed Matter Physics</subject><subject>Crystal defects</subject><subject>Crystallization</subject><subject>Efficiency</subject><subject>Interfaces</subject><subject>Ionic liquids</subject><subject>Ions</subject><subject>Materials Science</subject><subject>Metal halides</subject><subject>Moisture effects</subject><subject>Nanotechnology</subject><subject>Open circuit voltage</subject><subject>Ostwald ripening</subject><subject>Perovskites</subject><subject>Photoelectricity</subject><subject>Photovoltaic cells</subject><subject>Photovoltaics</subject><subject>Recombination</subject><subject>Research Article</subject><subject>Science</subject><subject>Solar cells</subject><subject>Synergistic effect</subject><subject>Thiocyanates</subject><issn>1998-0124</issn><issn>1998-0000</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2023</creationdate><recordtype>article</recordtype><sourceid>BENPR</sourceid><recordid>eNp1kctKxDAUhosoeH0AdwHX1VzatF2KeIMBQXQdTm4abZsxSQfnaXxV0xnFlWeTc5Lv_w_kL4pTgs8Jxs1FJJQ2VYkpK-sKs_JzpzggXdeWONfub09otV8cxviGMaekag-Kr0ejJ-XGFxSnYJ1y0CMYNXJjMsHCZtbGGpUikmuUXp1XaxghGeT86BTq3cfkNAKtXXIrsxHDMOS3aUDWh2FGlxCjW0HyYb5Cxs6bzJg2dEwg-8yY4Ffx3WU8-h4CUqbv43GxZ6GP5uTnPCqeb66fru7KxcPt_dXlolSM8FRKqnWlKqkll0wCUwRzRiVvVNNyjE2nGm3BctzVkP-nZdDWpOVWsQo0kQ07Ks62vsvgPyYTk3jzUxjzSkFb0tC641WdKbKlVPAxBmPFMrgBwloQLOYcxDYHkXMQcw7iM2voVhMzO76Y8Of8v-gbK_CQAg</recordid><startdate>20230501</startdate><enddate>20230501</enddate><creator>Zhu, Mengfei</creator><creator>Xia, 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Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Zhu, Mengfei</au><au>Xia, Yuren</au><au>Qin, Lina</au><au>Zhang, Kaiqiang</au><au>Liang, Junchuan</au><au>Zhao, Cheng</au><au>Hong, Daocheng</au><au>Jiang, Minghang</au><au>Song, Xinmei</au><au>Wei, Jie</au><au>Zhang, Pengbo</au><au>Tian, Yuxi</au><au>Jin, Zhong</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Reducing surficial and interfacial defects by thiocyanate ionic liquid additive and ammonium formate passivator for efficient and stable perovskite solar cells</atitle><jtitle>Nano research</jtitle><stitle>Nano Res</stitle><date>2023-05-01</date><risdate>2023</risdate><volume>16</volume><issue>5</issue><spage>6849</spage><epage>6858</epage><pages>6849-6858</pages><issn>1998-0124</issn><eissn>1998-0000</eissn><abstract>Organic-inorganic metal halide perovskites have attained extensive attention owing to their outstanding photovoltaic performances, but the existence of numerous defects in crystalline perovskites is still a serious constraint for the further development of perovskite solar cells (PSCs). In particular, the rapid crystallization guided by anti-solvents leads to plenty of surficial and interfacial defects in perovskite films. Herein, we report the adoption of a pseudo-halide anion based ionic liquid additive, 1-butyl-3-methylimidazolium thiocyanate (BMIMSCN) for growing ternary cation (CsFAMA, where FA = formamidinium and MA = methylammonium) perovskites with large-scale crystal grains and strong preferential orientation via the enhanced Ostwald ripening. Meanwhile, a novel halide-free passivator, benzylammonium formate (BAFa), was employed as a buffering layer on the perovskite films to suppress surface-dominated charge recombination. As a result, the cooperative effects of BMIMSCN additive and BAFa passivator lead to significant enhancements on fluorescence lifetime (from 79.41 to 201.01 ns), open-circuit voltage (from 1.13 to 1.19 V), and photoelectric conversion efficiency (from 18.90% to 22.33%). Moreover, the BMIMSCN/BAFa-CsFAMA PSCs demonstrated greatly improved stability against moisture and heat. This work suggests a promising strategy to improve the quality of perovskite materials via reducing the surficial and interfacial defects by the synergistic effects of lattice doping and interface engineering.</abstract><cop>Beijing</cop><pub>Tsinghua University Press</pub><doi>10.1007/s12274-023-5403-x</doi><tpages>10</tpages></addata></record> |
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subjects | Ammonium Atomic/Molecular Structure and Spectra Biomedicine Biotechnology Chemistry and Materials Science Condensed Matter Physics Crystal defects Crystallization Efficiency Interfaces Ionic liquids Ions Materials Science Metal halides Moisture effects Nanotechnology Open circuit voltage Ostwald ripening Perovskites Photoelectricity Photovoltaic cells Photovoltaics Recombination Research Article Science Solar cells Synergistic effect Thiocyanates |
title | Reducing surficial and interfacial defects by thiocyanate ionic liquid additive and ammonium formate passivator for efficient and stable perovskite solar cells |
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