Lewis acid-base adduct-type organic hole transport material for high performance and air-stable perovskite solar cells

Reddy, Saripally Sudhaker; Arivunithi, Veera Murugan; Sree, Vijaya Gopalan; Kwon, Haeun; Park, Juyun; Kang, Yong‐Cheol; Zhu, Huihui; Noh, Yong‐Young; Jin, Sung‐Ho

doi:10.1016/j.nanoen.2019.01.041

Cited by 45 publications

(30 citation statements)

References 58 publications

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“…The pyridine moiety in these HTM can act as a Lewis base and which in turn can assist defect passivation of perovskite and π-conjugation effect. [24][25][26][27][28] Besides the core of HTMs, the arm is also vital for optimizing semiconducting properties of HTMs. Up to now, the bis(N 3 ,N 3 ,N 6 ,N 6 -tetrakis(4-methoxyphenyl)-9H-carbazole-3,6-diamine) (DANCBZ) moiety have been demonstrated to be a useful arm for the design of small molecule based HTMs owing to their superior charge-transporting ability, stability and low-cost.…”

Section: Introductionmentioning

confidence: 99%

Pyridine Bridging Diphenylamine-Carbazole with Linking Topology as Rational Hole Transporter for Perovskite Solar Cells Fabrication

Huang¹,

Kazim²,

Sivakumar³

et al. 2020

Preprint

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Developing cost-effective and rational hole transporting materials is critical for fabricating high-performance perovskite solar cells (PSCs) and to promote their commercial endeavor. We have designed and developed pyridine (core) bridging diphenylamine-substituted carbazole (arm) small molecules, named as 2,6PyDANCBZ and 3,5PyDANCBZ. The linking topology of core and arm on their photophysical, thermal, semiconducting and photovoltaic properties were probed systematically. We found that the 2,6PyDANCBZ shows higher mobility and conductivity along with uniform film-forming ability as compared to 3,5PyDANCBZ. The PSCs fabricated with 2,6PyDANCBZ supersede the performance delivered by Spiro-OMeTAD, and importantly also gave improved long-term stability. Our findings put forward small molecules based on core-arm linking topology for cost-effective hole selective layers designing.

show abstract

Section: Introductionmentioning

confidence: 99%

Pyridine Bridging Diphenylamine-Carbazole with Linking Topology as Rational Hole Transporter for Perovskite Solar Cells Fabrication

Huang¹,

Kazim²,

Sivakumar³

et al. 2020

Preprint

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show abstract

“…It has been proved by S.S. Reddy et al that BCF can form Lewis acid-base adduct (LABA) with pyridine unit, which enhances the mobility, conductivity and WF of HTM [33]. Moreover, the LABA formation can interact with perovskite crystal thus enhance the charge extraction and suppress recombination [33]. In our study, the chemical interaction between BCF and H-Pyr was visually observed from the solution color change.…”

Section: Resultsmentioning

confidence: 53%

“…To further improve the device performance, a Lewis acid, tris (pentafluorophenyl)borane (BCF), is doped into H-Pyr. It has been proved by S.S. Reddy et al that BCF can form Lewis acid-base adduct (LABA) with pyridine unit, which enhances the mobility, conductivity and WF of HTM [33]. Moreover, the LABA formation can interact with perovskite crystal thus enhance the charge extraction and suppress recombination [33].…”

Section: Resultsmentioning

confidence: 99%

Pyridine-triphenylamine hole transport material for inverted perovskite solar cells

Zhang

Liu

et al. 2021

Journal of Energy Chemistry

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“…The pyridine moiety in these HTM can act as a Lewis base and which in turn can assist defect passivation of perovskite and π-conjugation effect. [24][25][26][27][28] Besides the core of HTMs, the arm is also vital for optimizing the semiconducting properties of HTMs. Up to now, the 6 -tetrakis(4-methoxyphenyl)-9H-carbazole-3,6-diamine) (DANCBZ) moiety have been demonstrated to be a valuable arm for the designing of molecular HTMs owing to their superior charge-transporting ability, stability and low-cost.…”

Section: Independently Reportedmentioning

confidence: 99%

Pyridine Bridging Diphenylamine-Carbazole with Linking Topology as Rational Hole Transporter for Perovskite Solar Cells Fabrication

Huang

Manju

Kazim

et al. 2020

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

Developing cost-effective and rational hole transporting materials is critical for fabricating high-performance perovskite solar cells (PSCs) and to promote their commercial endeavor. We have designed and developed pyridine (core) bridging diphenylamine-substituted carbazole (arm) small molecules, named as 2,6PyDANCBZ and 3,5PyDANCBZ. The linking topology of core and arm on their photophysical, thermal, semiconducting and photovoltaic properties were probed systematically. We found that the 2,6PyDANCBZ shows higher mobility and conductivity along with uniform film-forming ability as compared to 3,5PyDANCBZ. The PSCs fabricated with 2,6PyDANCBZ supersede the performance delivered by Spiro-OMeTAD, and importantly also gave improved long-term stability. Our findings put forward small molecules based on core-arm linking topology for cost-effective hole selective layers designing.

show abstract

Lewis acid-base adduct-type organic hole transport material for high performance and air-stable perovskite solar cells

Cited by 45 publications

References 58 publications

Pyridine Bridging Diphenylamine-Carbazole with Linking Topology as Rational Hole Transporter for Perovskite Solar Cells Fabrication

Pyridine Bridging Diphenylamine-Carbazole with Linking Topology as Rational Hole Transporter for Perovskite Solar Cells Fabrication

Pyridine-triphenylamine hole transport material for inverted perovskite solar cells

Pyridine Bridging Diphenylamine-Carbazole with Linking Topology as Rational Hole Transporter for Perovskite Solar Cells Fabrication

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