Motion-dispensing as an effective strategy for preparing efficient high-humidity processed perovskite solar cells

Noh, Mohamad Firdaus Mohamad; Arzaee, Nurul Affiqah; Mumthas, Inzamam Nawas Nawas; Fahsyar, Puteri Nor Aznie; Ramli, Noor Fadhilah; Nasir, Siti Nur Farhana Mohd; Yusoff, Abd. Rashid bin Mohd; Ibrahim, Mohd Adib; Teridi, Mohd Asri Mat

doi:10.1016/j.jallcom.2020.157320

Cited by 7 publications

(4 citation statements)

References 44 publications

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“…The small peak declines for M1–M4 samples proportionally, which proves that the layer can repel moisture from being captivated into the other layers although the fabrication process is done under high humidity conditions (RH = 40–50%). The other characteristic peaks correspond well to MAPbI 3 (at 2θ = 14.5° and 28.7°) for all samples with crystal size obtained ~ 31.9 nm 42 , 43 . In addition, some miscellaneous peaks were detected, which explained the presence of residual CH 3 NH 3 I will be decomposed and the product of I 2 .…”

Section: Resultssupporting

confidence: 63%

Stabilizing high-humidity perovskite solar cells with MoS2 hybrid HTL

Fahsyar,

Ludin,

Ramli

et al. 2023

Sci Rep

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The obstacle to the industrialization of perovskite solar cells (PSC) technology lies in their stability. This work rationalizes the PSC design with the employment of 2D-MoS2 as the hybrid hole transport layer (HTL). MoS2 was selected due to its unique optoelectronic and mechanical properties that could enhance hole extraction and thus boost the performance and stability of PSC devices. Five concentrations indicated MoS2 nanosheets were directly deposited onto the perovskite layer via the facile spin coating method. The electrochemical exfoliation and liquid exchange methods were demonstrated to obtain the lateral size of MoS2 nanosheets and further discussed their microscopic and spectroscopic characterizations. Remarkably, the optimum thickness and the excellent device increased the stability of the PSC, allowing it to maintain 45% of its degradation percentage ($$\frac{\Delta PCE}{PCE}$$ Δ P C E PCE ) for 120 h with high relative humidity (RH = 40–50%) in its vicinity. We observed that lithium-ion can intercalate into the layered MoS2 structure and reduce the interfacial resistance of perovskite and the HTL. Most importantly, the 2D-MoS2 mechanism’s effect on enabling stable and efficient devices by reducing lithium-ion migration in the HTL is demonstrated in this work to validate the great potential of this hybrid structure in PSC applications.

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Section: Resultssupporting

confidence: 63%

Stabilizing high-humidity perovskite solar cells with MoS2 hybrid HTL

Fahsyar,

Ludin,

Ramli

et al. 2023

Sci Rep

Self Cite

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“…electron∕sec photon∕sec = current∕(charge of 1 electron) (total power of photons)∕(energy of one photon) surface morphology of perovskite film, in which a few pinholes were present and the leakage current increased. Compared with the DDTS-5s, DDTS-10s, and DDTS-15s, the increased crystal size reduced the charge aggregation at the grain boundary, thereby improving the FF and V oc owing to the high-quality perovskite film formation and the decreased number of shunting pathways [36]. These findings showed that time variation significantly affected the morphology and thus contributed to improving device performance.…”

Section: Resultsmentioning

confidence: 91%

Ambient fabrication of perovskite solar cells through delay-deposition technique

Fahsyar

Ludin²,

Ramli³

et al. 2021

Mater Renew Sustain Energy

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The establishment of perovskite solar cells (PSCs) in terms of their power-conversion efficiency (PCE) over silicon-based solar cells is undeniable. The state-of-art of easy device fabrications of PSCs has enabled them to rapidly gain a place in third-generation photovoltaic technology. Numerous obstacles remain to be addressed in device efficiency and stability. Low performance owing to easily degraded surface and deterioration of perovskite film quality resulting from humidity are issues that often arise. This work explored a new approach to producing high-quality perovskite films prepared under high relative humidity (RH = 40%–50%). In particular, the ubiquitous 4-tert-butylpyridine (tBp) was introduced into lead iodide (PbI2) precursor as an additive, and the films were fabricated using a two-step deposition method followed by a delay-deposition technique of methylammonium iodide (MAI). High crystallinity and controlled nucleation of MAI were needed, and this approach revealed the significance of time control to ensure high-quality films with large grain size, high crystallography, wide coverage on substrate, and precise and evenly coupled MAI molecules to PbI2 films. Compared with the two-step method without time delay, a noticeable improvement in PCE from 3.2 to 8.3% was achieved for the sample prepared with 15 s time delay. This finding was primarily due to the significant enhancement in the open-circuit voltage, short-circuit current, and fill factor of the device. This strategy can effectively improve the morphology and crystallinity of perovskite films, as well as reduce the recombination of photogenerated carriers and increase of current density of devices, thereby achieving improved photovoltaic performance.

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“…Generally, R s bounds up when the materials and wires are in contact, and the integration of R ct and CPE is related to the charge transport resistance at the heterojunction interface and associated capacitance. 37 The relevant fitted parameters are precisely listed in Table 2, and the higher R ct along with lower R s of the APP-modified PSC demonstrates strengthened charge injection and transfer at the interfaces. The reasonable explanation for these improved performance parameters is that the APP additive can slow down defect-assisted charge recombination and reduce the surface/interface defect density of the PSCs at the same time.…”

Section: Paper Dalton Transactionsmentioning

confidence: 99%

Air-processed MAPbI₃ perovskite solar cells achieve 20.87% efficiency and excellent bending resistance enabled via a polymer dual-passivation strategy

Zhang,

Xiong,

Chen

et al. 2023

Dalton Trans.

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Motion-dispensing as an effective strategy for preparing efficient high-humidity processed perovskite solar cells

Cited by 7 publications

References 44 publications

Stabilizing high-humidity perovskite solar cells with MoS2 hybrid HTL

Stabilizing high-humidity perovskite solar cells with MoS2 hybrid HTL

Ambient fabrication of perovskite solar cells through delay-deposition technique

Air-processed MAPbI₃ perovskite solar cells achieve 20.87% efficiency and excellent bending resistance enabled via a polymer dual-passivation strategy

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Motion-dispensing as an effective strategy for preparing efficient high-humidity processed perovskite solar cells

Cited by 7 publications

References 44 publications

Stabilizing high-humidity perovskite solar cells with MoS2 hybrid HTL

Stabilizing high-humidity perovskite solar cells with MoS2 hybrid HTL

Ambient fabrication of perovskite solar cells through delay-deposition technique

Air-processed MAPbI3 perovskite solar cells achieve 20.87% efficiency and excellent bending resistance enabled via a polymer dual-passivation strategy

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Air-processed MAPbI₃ perovskite solar cells achieve 20.87% efficiency and excellent bending resistance enabled via a polymer dual-passivation strategy