Barium acetate as an additive for high performance perovskite solar cells

Yueming Wang; Yulei Wu; Sheng Fu; Changjian Song; Li Wan; Wenxiao Zhang; Xiaodong Li; Weiguang Yang; Weijie Song; Junfeng Fang

doi:10.1039/c9tc04067f

Barium acetate as an additive for high performance perovskite solar cells

Yueming Wang
, Yulei Wu
, Sheng Fu
, Changjian Song
, Li Wan
, Wenxiao Zhang
, Xiaodong Li
, Weiguang Yang
, Weijie Song
, Junfeng Fang^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

13 Scopus citations

Abstract

Defects within the halide perovskite films limit the efficiency and stability of perovskite solar cells (PSCs). Here, barium acetate (BaAc₂) is employed as an additive in MAPbI₃ for high performance PSCs. The BaAc₂ can control the crystallization and thus produce high-quality perovskite films, which is attributed to interaction between the acetate ions and perovskite precursor. Both low defect density and the movement of energy levels contribute to a significant increase in open circuit voltage (V_oc). Consequently, an efficiency up to 19.82% with a high V_oc of 1.13 V is obtained based on the optimized BaAc₂ concentration device. Moreover, the compact perovskite crystal with suppression of ion migration endows the BaAc₂ doped PSCs with obviously enhanced thermal stability. The device with BaAc₂ additive maintained over 90% of its original power conversion efficiency (PCE) after thermal aging at 90 °C for 400 hours.

Original language	English
Pages (from-to)	11411-11418
Number of pages	8
Journal	Journal of Materials Chemistry C
Volume	7
Issue number	37
DOIs	https://doi.org/10.1039/c9tc04067f
State	Published - 2019
Externally published	Yes

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@article{90293987ee6f4995a774e6aeb779a9fd,

title = "Barium acetate as an additive for high performance perovskite solar cells",

abstract = "Defects within the halide perovskite films limit the efficiency and stability of perovskite solar cells (PSCs). Here, barium acetate (BaAc2) is employed as an additive in MAPbI3 for high performance PSCs. The BaAc2 can control the crystallization and thus produce high-quality perovskite films, which is attributed to interaction between the acetate ions and perovskite precursor. Both low defect density and the movement of energy levels contribute to a significant increase in open circuit voltage (Voc). Consequently, an efficiency up to 19.82\% with a high Voc of 1.13 V is obtained based on the optimized BaAc2 concentration device. Moreover, the compact perovskite crystal with suppression of ion migration endows the BaAc2 doped PSCs with obviously enhanced thermal stability. The device with BaAc2 additive maintained over 90\% of its original power conversion efficiency (PCE) after thermal aging at 90 °C for 400 hours.",

author = "Yueming Wang and Yulei Wu and Sheng Fu and Changjian Song and Li Wan and Wenxiao Zhang and Xiaodong Li and Weiguang Yang and Weijie Song and Junfeng Fang",

note = "Publisher Copyright: {\textcopyright} The Royal Society of Chemistry 2019.",

year = "2019",

doi = "10.1039/c9tc04067f",

language = "英语",

volume = "7",

pages = "11411--11418",

journal = "Journal of Materials Chemistry C",

issn = "2050-7526",

publisher = "Royal Society of Chemistry",

number = "37",

}

TY - JOUR

T1 - Barium acetate as an additive for high performance perovskite solar cells

AU - Wang, Yueming

AU - Wu, Yulei

AU - Fu, Sheng

AU - Song, Changjian

AU - Wan, Li

AU - Zhang, Wenxiao

AU - Li, Xiaodong

AU - Yang, Weiguang

AU - Song, Weijie

AU - Fang, Junfeng

PY - 2019

Y1 - 2019

N2 - Defects within the halide perovskite films limit the efficiency and stability of perovskite solar cells (PSCs). Here, barium acetate (BaAc2) is employed as an additive in MAPbI3 for high performance PSCs. The BaAc2 can control the crystallization and thus produce high-quality perovskite films, which is attributed to interaction between the acetate ions and perovskite precursor. Both low defect density and the movement of energy levels contribute to a significant increase in open circuit voltage (Voc). Consequently, an efficiency up to 19.82% with a high Voc of 1.13 V is obtained based on the optimized BaAc2 concentration device. Moreover, the compact perovskite crystal with suppression of ion migration endows the BaAc2 doped PSCs with obviously enhanced thermal stability. The device with BaAc2 additive maintained over 90% of its original power conversion efficiency (PCE) after thermal aging at 90 °C for 400 hours.

AB - Defects within the halide perovskite films limit the efficiency and stability of perovskite solar cells (PSCs). Here, barium acetate (BaAc2) is employed as an additive in MAPbI3 for high performance PSCs. The BaAc2 can control the crystallization and thus produce high-quality perovskite films, which is attributed to interaction between the acetate ions and perovskite precursor. Both low defect density and the movement of energy levels contribute to a significant increase in open circuit voltage (Voc). Consequently, an efficiency up to 19.82% with a high Voc of 1.13 V is obtained based on the optimized BaAc2 concentration device. Moreover, the compact perovskite crystal with suppression of ion migration endows the BaAc2 doped PSCs with obviously enhanced thermal stability. The device with BaAc2 additive maintained over 90% of its original power conversion efficiency (PCE) after thermal aging at 90 °C for 400 hours.

UR - https://www.scopus.com/pages/publications/85072711582

U2 - 10.1039/c9tc04067f

DO - 10.1039/c9tc04067f

M3 - 文章

AN - SCOPUS:85072711582

SN - 2050-7526

VL - 7

SP - 11411

EP - 11418

JO - Journal of Materials Chemistry C

JF - Journal of Materials Chemistry C

IS - 37

ER -

Barium acetate as an additive for high performance perovskite solar cells

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