Boosting efficiency and stability of perovskite solar cells with nickel phthalocyanine as a low-cost hole transporting layer material

Haider, Mustafa; Zhen, Chao; Wu, Tingting; Liu, Gang; Cheng, Hui‐Ming

doi:10.1016/j.jmst.2018.03.005

Cited by 51 publications

(21 citation statements)

References 47 publications

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“…17.5% without certification for carbonbased PSCs. [23,40] This is not only a record efficiency for carbon-electrode based PSCs, but also the first certified stabilized efficiency for all types of PSCs (Fig. S8).…”

Section: Resultsmentioning

confidence: 64%

“…1a, the long/tortuous routes associated with charge transport along polymer chains of P3HT cause inefficient hole transport and high resistance loss. 40 Therefore, we introduced a hole transport engineering approach by developing a P3HT/graphene composite HTL. The graphene and P3HT were mixed homogenously and resulted in a high-quality contact.…”

Section: Resultsmentioning

confidence: 99%

“…[38] Many groups have also employed inorganic materials, such as NiO, CuPc as the HTL in carbon-based PSCs with efficiency up to 17.5%. [39][40][41] However, the PCEs of the carbon-based PSCs are still inferior to those of devices with metal electrodes. Therefore, developing a highly-stable, dopant-free HTL with good hole mobility is of great significance for constructing high efficiency and stable carbon-based PSCs.…”

Section: Introductionmentioning

confidence: 99%

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Highly stable carbon-based perovskite solar cell with a record efficiency of over 18% via hole transport engineering

Chu

Ding

Peng

et al. 2019

Journal of Materials Science & Technology

142

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Carbon-based perovskite solar cells show great potential owing to their low-cost production and superior stability in air, compared to their counterparts using metal contacts. The photovoltaic performance of carbon-based PSCs, however, has been progressing slowly in spite of an impressive efficiency when they were first reported. One of the major obstacles is that the hole transport materials developed for state-of-the-art Au-based PSCs are not suitable for carbon-based PSCs. Here, we develop a low-temperature, solution-processed Poly(3-hexylthiophene-2,5-diyl) (P3HT)/graphene composite hole transport layer, that is compatible with paintable carbon-electrodes to produce state-of-the-art perovskite devices.Space-charge-limited-current measurements reveal that the as-prepared P3HT/graphene composite exhibits outstanding charge mobility and thermal tolerance, with hole mobility increasing from 8.3×10-3 cm2•V -1 •s -1 (as-deposited) to 1.2×10-2 cm 2 •V -1 •s -1 (after annealing at 100 o C) -two orders of magnitude larger than pure P3HT. The improved charge transport and extraction provided by the composite HTL provides a significant efficiency improvement compared to cells with a pure P3HT HTL. As a result, we report carbon-based solar cells with a record efficiency of 17.8% (certified by Newport); and the first perovskite cells to be certified under the stabilized testing protocol. The outstanding device stability is demonstrated by only 3% drop after storage in ambient conditions (humidity: ca. 50%) for 1680 h (non-encapsulated), and retention of ca. 89% of their original output under continuous 1-Sun illumination at room-temperature for 600 h (encapsulated) in a nitrogen environment.

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Section: Resultsmentioning

confidence: 64%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Highly stable carbon-based perovskite solar cell with a record efficiency of over 18% via hole transport engineering

Chu

Ding

Peng

et al. 2019

Journal of Materials Science & Technology

142

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“…The isomer ratio of Ni(t-Bu)4Pc with C2ν was found to be an important factor to improve external quantum efficiency [94]. In addition, recent reports showed that the use of pristine vacuum thermally deposited NiPc as hole-transport-layer in perovskite-solar cells improves the performance of the cells when compared with other metal phthalocyanines such as CuPc: values of 14.3%, 19.45 mA cm−2, 1.0 V and 73.6% were obtained in the devices for maximum power conversion efficiency, short-circuit current density, open circuit voltage and fill-factor, respectively [95,96].…”

Section: Phthalocyaninesmentioning

confidence: 99%

Evolutionary Computation for Parameter Extraction of Organic Thin-Film Transistors Using Newly Synthesized Liquid Crystalline Nickel Phthalocyanine

et al. 2019

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In this work, the topic of the detrimental contact effects in organic thin-film transistors (OTFTs) is revisited. In this case, contact effects are considered as a tool to enhance the characterization procedures of OTFTs, achieving more accurate values for the fundamental parameters of the transistor threshold voltage, carrier mobility and on-off current ratio. The contact region is also seen as a fundamental part of the device which is sensitive to physical, chemical and fabrication variables. A compact model for OTFTs, which includes the effects of the contacts, and a recent proposal of an associated evolutionary parameter extraction procedure are reviewed. Both the model and the procedure are used to assess the effect of the annealing temperature on a nickel-1,4,8,11,15,18,22,25-octakis(hexyl)phthalocyanine (NiPc6)-based OTFT. A review of the importance of phthalocyanines in organic electronics is also provided. The characterization of the contact region in NiPc6 OTFTs complements the results extracted from other physical–chemical techniques such as differential scanning calorimetry or atomic force microscopy, in which the transition from crystal to columnar mesophase imposes a limit for the optimum performance of the annealed OTFTs.

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“…The photo-carriers can effectively transport through the perovskite active layer, arriving at the interfaces with the electron selective layers (ESLs) and hole selective layers (HSLs). In this situation, controlling the interface structures plays an important role in promoting the collection of photo-carriers and thus the power conversion efficiency of PSCs [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Chlorine capped SnO2 quantum-dots modified TiO2 electron selective layer to enhance the performance of planar perovskite solar cells

Zhen

et al. 2019

Science Bulletin

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Boosting efficiency and stability of perovskite solar cells with nickel phthalocyanine as a low-cost hole transporting layer material

Cited by 51 publications

References 47 publications

Highly stable carbon-based perovskite solar cell with a record efficiency of over 18% via hole transport engineering

Highly stable carbon-based perovskite solar cell with a record efficiency of over 18% via hole transport engineering

Evolutionary Computation for Parameter Extraction of Organic Thin-Film Transistors Using Newly Synthesized Liquid Crystalline Nickel Phthalocyanine

Chlorine capped SnO2 quantum-dots modified TiO2 electron selective layer to enhance the performance of planar perovskite solar cells

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