Hydrazinium Salt as Additive To Improve Film Morphology and Carrier Lifetime for High-Efficiency Planar-Heterojunction Perovskite Solar Cells via One-Step Method

Zhang, Xin; Yuan, Sijian; Lu, Haizhou; Zhang, Huotian; Wang, Pengfei; Cui, Xiaolei; Zhang, Yin; Liu, Qi; Wang, Jiao; Zhan, Yiqiang; Sun, Zhengyi; Huang, Wei

doi:10.1021/acsami.7b11168

Cited by 28 publications

(30 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We can also observe a shift of the (001) peak located at ≈14.3°, as shown in Figure b. The shift to high degree of the peak indicates the reduction in the lattice constant, which is consistent with successful incorporation of chloride anion into the perovskite crystal lattice, as reported previously for different Cl‐containing perovskite materials …”

Section: Resultssupporting

confidence: 89%

Synergy Effect of Both 2,2,2‐Trifluoroethylamine Hydrochloride and SnF₂ for Highly Stable FASnI_3−xCl_x Perovskite Solar Cells

Yu¹,

Xu²,

Liao

et al. 2019

Solar RRL

View full text Add to dashboard Cite

The environmentally friendly additive 2,2,2‐trifluoroethylamine hydrochloride (TFEACl) is used in synergy with SnF2 to enhance the efficiency and stability of FASnI3‐based solar cells. Both TFEA+ and Cl− are present in the films, but only Cl− is incorporated into the crystal lattice of the perovskite. The addition of TFEACl suppresses the segregation of SnF2, resulting in improvements in film morphology, in addition to a more favorable energy band alignment, and improved suppression of the formation of Sn4+. Consequently, reduced charge recombination and improved charge collection result in an efficiency enhancement from 3.63 to 5.30%. The stability of the devices is also significantly enhanced, with devices with TFEACl retaining over 60% of initial PCE after 350 h of light soaking in ambient, while devices without TFEACl experience failure in 120 h under the same testing condition.

show abstract

Section: Resultssupporting

confidence: 89%

Synergy Effect of Both 2,2,2‐Trifluoroethylamine Hydrochloride and SnF₂ for Highly Stable FASnI_3−xCl_x Perovskite Solar Cells

Yu¹,

Xu²,

Liao

et al. 2019

Solar RRL

View full text Add to dashboard Cite

show abstract

“…Introduced NH 4 + penetrated into the [PbI 6 ] 4− octahedral layer and formed NH 4 PbI 3 , interrupting the direct reaction between MA + and [PbI 6 ] 4− , which provides heterogeneous nucleation sites, fabricating the high‐quality perovskite film with large crystals and meliorated crystallinity. Furthermore, Zhang et al introduced hydrazinium chloride (N 2 H 5 Cl) to MAPbI 3 perovskite, suppressing the acicular perovskite formation, which resulted in MAPbI 3 film with higher coverage and crystallinity . The organic halides improve the morphology of perovskite film by interacting with perovskite precursors or intercalating into the perovskite lattice.…”

Section: Crystallization Methods In Pscsmentioning

confidence: 99%

A Review on Reducing Grain Boundaries and Morphological Improvement of Perovskite Solar Cells from Methodology and Material‐Based Perspectives

Choi

et al. 2019

Small Methods

View full text Add to dashboard Cite

The ORCID identification number(s) for the author(s) of this article can be found under https://doi.org/10.1002/smtd.201900569.Perovskite solar cells (PSCs) have achieved 25.2% of their certified efficiency and emerged as up-and-coming energy-harvesting candidates owing to their superior properties. However, perovskite films are mainly polycrystalline films, and thus, the formation of grain boundaries (GBs) is inevitable. Since GBs have numerous defect sites that provide a channel for ion migration, reducing GBs is highly significant for achieving high efficiency and long-term stability of PSCs. To this end, researchers have made efforts to produce a large crystal-based perovskite film with reduced GBs. In this study, various methods that decrease GBs and enhance the morphology of perovskites are summarized and categorized into methodology-and material-based approaches. Furthermore, a future research direction to produce high-quality and large grain-based perovskite film is also proposed.

show abstract

“…[ 5,8 ] Non‐radiative recombination process in the PSCs is considered to be the main reason contributing to the energy losses affecting V oc and FF. Intense efforts have been made to reduce the non‐radiative recombination, such as interface passivation, [ 5,9,10 ] additive engineering, [ 11–13 ] and low dimension perovskite mixing, [ 14–17 ] in order to improve V oc and FF. Research in this direction leads to the V oc approaching 95% of the S–Q limit and FF over 80%.…”

Section: Introductionmentioning

confidence: 99%

Highly Efficient 1D/3D Ferroelectric Perovskite Solar Cell

Zhang

Shi

et al. 2021

Adv Funct Materials

Self Cite

View full text Add to dashboard Cite

With the capability to manipulate the built‐in field in solar cells, ferroelectricity is found to be a promising attribute for harvesting solar energy in solar cell devices by influencing associated device parameters. Researchers have devoted themselves to the exploration of ferroelectric materials that simultaneously possess strong light absorption and good electric transport properties for a long time. Here, it is presented a novel and facile approach of combining state‐of‐art light absorption and electric transport properties with ferroelectricity by the incorporation of room temperature 1D ferroelectric perovskite with 3D organic–inorganic hybrid perovskite (OIHP). The 1D/3D mixed OIHP films are found to exhibit evident ferroelectric properties. It is notable that the poling of the 1D/3D mixed ferroelectric OIHP solar cell can increase the average Voc can be increased from 1.13 to 1.16 V, the average PCE from 20.7% to 21.5%. A maximum power conversion efficiency of 22.7%, along with an enhanced fill factor of over 80% and open‐circuit voltage of 1.19 V, can be achieved in the champion device. The enhancement is by virtue of reduced surface recombination by ferroelectricity‐induced modification of the built‐in field. The maximum power point tracking measurement substantiates the retention of ferroelectric‐polarization during the continued operation.

show abstract

Hydrazinium Salt as Additive To Improve Film Morphology and Carrier Lifetime for High-Efficiency Planar-Heterojunction Perovskite Solar Cells via One-Step Method

Cited by 28 publications

References 40 publications

Synergy Effect of Both 2,2,2‐Trifluoroethylamine Hydrochloride and SnF₂ for Highly Stable FASnI_3−xCl_x Perovskite Solar Cells

Synergy Effect of Both 2,2,2‐Trifluoroethylamine Hydrochloride and SnF₂ for Highly Stable FASnI_3−xCl_x Perovskite Solar Cells

A Review on Reducing Grain Boundaries and Morphological Improvement of Perovskite Solar Cells from Methodology and Material‐Based Perspectives

Highly Efficient 1D/3D Ferroelectric Perovskite Solar Cell

Contact Info

Product

Resources

About

Hydrazinium Salt as Additive To Improve Film Morphology and Carrier Lifetime for High-Efficiency Planar-Heterojunction Perovskite Solar Cells via One-Step Method

Cited by 28 publications

References 40 publications

Synergy Effect of Both 2,2,2‐Trifluoroethylamine Hydrochloride and SnF2 for Highly Stable FASnI3−xClx Perovskite Solar Cells

Synergy Effect of Both 2,2,2‐Trifluoroethylamine Hydrochloride and SnF2 for Highly Stable FASnI3−xClx Perovskite Solar Cells

A Review on Reducing Grain Boundaries and Morphological Improvement of Perovskite Solar Cells from Methodology and Material‐Based Perspectives

Highly Efficient 1D/3D Ferroelectric Perovskite Solar Cell

Contact Info

Product

Resources

About

Synergy Effect of Both 2,2,2‐Trifluoroethylamine Hydrochloride and SnF₂ for Highly Stable FASnI_3−xCl_x Perovskite Solar Cells

Synergy Effect of Both 2,2,2‐Trifluoroethylamine Hydrochloride and SnF₂ for Highly Stable FASnI_3−xCl_x Perovskite Solar Cells