Compositional Design of Spontaneous Heterointerface Modulators for Perovskite Solar Cells to Mitigate Concentration Sensitivity DOI
Naoyuki Nishimura, Hiroyuki Kanda, Takurou N. Murakami

et al.

ACS Sustainable Chemistry & Engineering, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 2, 2024

Alkyl-primary-ammonium bis(trifluoromethanesulfonyl)imides (RA-TFSIs), whose archetype is n-octylammonium TFSI (OA-TFSI), have recently emerged as spontaneous heterointerface modulators (SHMs) for perovskite solar cells (PSCs). Hole-transport material (HTM) solutions containing RA-TFSIs enable passivation via HTM deposition and enhance the photovoltaic performance. Moreover, this improves fabrication efficiency of PSCs by obviating conventional postpassivation processes. A key aspect developing PSC processes using SHMs concentration sensitivity RA-TFSIs; excessive OA-TFSI in solution leads to some OA cations failing attach surface, hindering carrier collection. Herein, we address issue employing a newly synthesized ethylammonium (EA-TFSI). EA-TFSI enhances properties while mitigating sensitivity, owing its small cation size, reducing risk poor For OA-TFSI, increasing twice optimal amount decreases power conversion (PCE) 14%, accompanied drops fill factor (FF). However, upon addition, PCE only 4%, with FF values remaining unchanged. This study offers insights into designing achieve broad process windows, which crucial, yet rarely discussed aspect.

Language: Английский

Fluorine-substituted bifunctional molecules for enhanced perovskite solar cell performance DOI

Murali Ravi,

Mengde Zhai,

Ziyang Xia

et al.

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 159876 - 159876

Published: Jan. 1, 2025

Language: Английский

Citations

0
Compensational Effects of 4-tert-Butylpyridine Additive for PTAA Hole Transport Material Using a Spontaneous Perovskite Passivator in Perovskite Solar Cells DOI
Naoyuki Nishimura, Hiroyuki Kanda, Takurou N. Murakami

et al.

ACS Applied Energy Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 24, 2025

Language: Английский

Citations

0
Compositional Design of Spontaneous Heterointerface Modulators for Perovskite Solar Cells to Mitigate Concentration Sensitivity DOI
Naoyuki Nishimura, Hiroyuki Kanda, Takurou N. Murakami

et al.

ACS Sustainable Chemistry & Engineering, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 2, 2024

Alkyl-primary-ammonium bis(trifluoromethanesulfonyl)imides (RA-TFSIs), whose archetype is n-octylammonium TFSI (OA-TFSI), have recently emerged as spontaneous heterointerface modulators (SHMs) for perovskite solar cells (PSCs). Hole-transport material (HTM) solutions containing RA-TFSIs enable passivation via HTM deposition and enhance the photovoltaic performance. Moreover, this improves fabrication efficiency of PSCs by obviating conventional postpassivation processes. A key aspect developing PSC processes using SHMs concentration sensitivity RA-TFSIs; excessive OA-TFSI in solution leads to some OA cations failing attach surface, hindering carrier collection. Herein, we address issue employing a newly synthesized ethylammonium (EA-TFSI). EA-TFSI enhances properties while mitigating sensitivity, owing its small cation size, reducing risk poor For OA-TFSI, increasing twice optimal amount decreases power conversion (PCE) 14%, accompanied drops fill factor (FF). However, upon addition, PCE only 4%, with FF values remaining unchanged. This study offers insights into designing achieve broad process windows, which crucial, yet rarely discussed aspect.

Language: Английский

Citations

1