Hole-Transport Layer Molecular Weight and Doping Effects on Perovskite Solar Cell Efficiency and Mechanical Behavior

Lee, Inhwa; Rolston, Nicholas; Brunner, Pierre-Louis M.; Dauskardt, Reinhold H.

doi:10.1021/acsami.9b05567

Cited by 46 publications

(56 citation statements)

References 39 publications

(56 reference statements)

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“…9f. 158 They also found that cracks are more easily formed in PTAA in humid environments. Interestingly, it is possible that a larger M w PTAA polymer would be better able to accommodate the mechanical stress provided by perovskite volume changes during its degradation as identified by Yang et al, 72 and improved cell stability under humidity.…”

Section: View Article Onlinementioning

confidence: 98%

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Lessons learned from spiro-OMeTAD and PTAA in perovskite solar cells

Rombach

Haque

Macdonald

2021

Energy Environ. Sci.

365

273

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Section: View Article Onlinementioning

confidence: 98%

“…Co(III) complexes are not normally used to dope PTAA. 158 LiTFSI and tBP. Although the doping mechanisms and effects of LiTFSI and tBP in PTAA-based PSCs are still somewhat unexplored, in some ways they are likely to echo their effects in devices employing spiro-OMeTAD.…”

Section: Ptaa Dopingmentioning

confidence: 99%

Lessons learned from spiro-OMeTAD and PTAA in perovskite solar cells

Rombach

Haque

Macdonald

2021

Energy Environ. Sci.

365

273

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“…The next technological challenge is finding a scalable solar cell production method possibly at low cost and mild temperature of processing. In this scenario, recent advances in the development of inverted device architecture with polymeric interlayers [18,19] and the use of molecular additives to simplify the solution processing conditions [20,21] and to improve the resulting perovskite material properties [20] provide a further major stimulus to the research in field.…”

Section: Introductionmentioning

confidence: 99%

Optimizing the Interface between Hole Transporting Material and Nanocomposite for Highly Efficient Perovskite Solar Cells

et al. 2019

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The performances of organometallic halide perovskite-based solar cells severely depend on the device architecture and the interface between each layer included in the device stack. In particular, the interface between the charge transporting layer and the perovskite film is crucial, since it represents both the substrate where the perovskite polycrystalline film grows, thus directly influencing the active layer morphology, and an important site for electrical charge extraction and/or recombination. Here, we focus on engineering the interface between a perovskite-polymer nanocomposite, recently developed by our group, and different commonly employed polymeric hole transporters, namely PEDOT: PSS [poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate)], PEDOT, PTAA [poly(bis 4-phenyl}{2,4,6-trimethylphenyl}amine)], Poly-TPD [Poly(N,N′-bis(4-butylphenyl)-N,N′-bis(phenyl)-benzidine] Poly-TPD, in inverted planar perovskite solar cell architecture. The results show that when Poly-TPD is used as the hole transfer material, perovskite film morphology improved, suggesting an improvement in the interface between Poly-TPD and perovskite active layer. We additionally investigate the effect of the Molecular Weight (MW) of Poly-TPD on the performance of perovskite solar cells. By increasing the MW, the photovoltaic performances of the cells are enhanced, reaching power conversion efficiency as high as 16.3%.

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“…The improved stability response of NPB compared to the other organic/polymer hole transport layer is mainly due to the hydrophobic nature of the NPB layer [ 12 , 13 ]. However, the doping of NPB may initiate many complex chemical processes leading to long-term stability issues for photovoltaic applications especially at a higher temperature [ 14 , 15 , 16 , 17 ]. Therefore, the dopant free NPB as a hole-transport layer was used for the current proposed perovskite solar cell.…”

Section: Introductionmentioning

confidence: 99%

Design of Dopant and Lead-Free Novel Perovskite Solar Cell for 16.85% Efficiency

Моиз

Alahmadi

2021

Polymers

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Halide based perovskite offers numerous advantages such as high-efficiency, low-cost, and simple fabrication for flexible solar cells. However, long-term stability as well as environmentally green lead-free applications are the real challenges for their commercialization. Generally, the best reported perovskite solar cells are composed of toxic lead (Pb) and unstable polymer as the absorber and electron/hole-transport layer, respectively. Therefore, in this study, we proposed and simulated the photovoltaic responses of lead-free absorber such as cesium titanium (IV) bromide, Cs2TiBr6 with dopant free electron phenyl-C61-butyric acid methyl ester (PCBM), and dopant free hole transport layer N,N′-Di(1-naphthyl)-N,N′-diphenyl-(1,1′-biphenyl)-4,4′-diamine (NPB) for the Ag/BCP/PCBM/Cs2TiBr6/NPB/ITO based perovskite solar cell. After comprehensive optimization of each layer through vigorous simulations with the help of software SCAPS 1D, it is observed that the proposed solar cell can yield maximum power-conversion efficiency up to 16.85%. This efficiency is slightly better than the previously reported power-conversion efficiency of a similar type of perovskite solar cell. We believe that the outcome of this study will not only improve our knowledge, but also triggers further investigation for the dopant and lead-free perovskite solar cell.

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Hole-Transport Layer Molecular Weight and Doping Effects on Perovskite Solar Cell Efficiency and Mechanical Behavior

Cited by 46 publications

References 39 publications

Lessons learned from spiro-OMeTAD and PTAA in perovskite solar cells

Lessons learned from spiro-OMeTAD and PTAA in perovskite solar cells

Optimizing the Interface between Hole Transporting Material and Nanocomposite for Highly Efficient Perovskite Solar Cells

Design of Dopant and Lead-Free Novel Perovskite Solar Cell for 16.85% Efficiency

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