Efficient and stable perovskite solar cells based on functional graphene-modified P3HT hole-transporting layer

Ye, Jian; Li, Xueliang; Zhao, Jianjun; Mei, Xuelan; Li, Qian

doi:10.1039/c6ra03466g

Cited by 43 publications

(32 citation statements)

References 34 publications

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“…This problem can be partially addressed by blending P3HT with graphene. Recently, Ye et al reported an imidazole‐functional‐graphene (I‐F‐Graphene):P3HT composite as HTL for a mesoscopic HPSC of FTO/cp‐TiO 2 /mp‐TiO 2 /MAPbI 3 /I‐F‐Graphene:P3HT/Ag . I‐F‐Graphene was dispersed into P3HT to improve the hole mobility, conductivity and hydrophobicity of this composite HTL.…”

Section: D Materials For Halide Perovskite Solar Cellsmentioning

confidence: 99%

Two‐Dimensional Materials for Halide Perovskite‐Based Optoelectronic Devices

2017

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Halide perovskites have high light absorption coefficients, long charge carrier diffusion lengths, intense photoluminescence, and slow rates of non-radiative charge recombination. Thus, they are attractive photoactive materials for developing high-performance optoelectronic devices. These devices are also cheap and easy to be fabricated. To realize the optimal performances of halide perovskite-based optoelectronic devices (HPODs), perovskite photoactive layers should work effectively with other functional materials such as electrodes, interfacial layers and encapsulating films. Conventional two-dimensional (2D) materials are promising candidates for this purpose because of their unique structures and/or interesting optoelectronic properties. Here, we comprehensively summarize the recent advancements in the applications of conventional 2D materials for halide perovskite-based photodetectors, solar cells and light-emitting diodes. The examples of these 2D materials are graphene and its derivatives, mono- and few-layer transition metal dichalcogenides (TMDs), graphdiyne and metal nanosheets, etc. The research related to 2D nanostructured perovskites and 2D Ruddlesden-Popper perovskites as efficient and stable photoactive layers is also outlined. The syntheses, functions and working mechanisms of relevant 2D materials are introduced, and the challenges to achieving practical applications of HPODs using 2D materials are also discussed.

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Section: D Materials For Halide Perovskite Solar Cellsmentioning

confidence: 99%

Two‐Dimensional Materials for Halide Perovskite‐Based Optoelectronic Devices

2017

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“…Researches have been carried out employing P3HT as dopant‐free HTM for PSCs during the years 2015 and 2016, and PCEs about 6.17, 7.5, 8.3, and 11.8%, have been reported. Significant power conversion efficiency of up to 13.82% has been reported in 2016 by Ye et al for PSC devices using P3HT modified with F‐graphene as HTM . In 2017, however, in a research by Colorado, two different conjugated polymers, P3HT and PTB7:Th ( 8 ) were employed as dopant‐free HTMs in PSCs .…”

Section: Dopant‐free Hole Transporting Materials For Pscsmentioning

confidence: 99%

Dopant‐Free Hole Transporting Materials for Perovskite Solar Cells

Rezaee

Liu

et al. 2018

Solar RRL

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This article reviews various dopant-free hole transporting materials (HTMs) used in perovskite solar cells (PSCs) in three main categories including inorganic, polymeric, and small molecule HTMs. PSCs have undergone rapid progress, achieving power conversion efficiencies (PCEs) above 22%. With their low production cost and high efficiencies, PSCs are considered promising next-generation solar cell technology. In all developed architectures for PSCs, including planar and mesoscopic with conventional and inverted structures, HTMs play a significant role in determining the photovoltaic performance of PSCs. Using p-type dopants, however, is considered a common strategy to increase the hole conductivity of HTM, which is usually compensated by a more complicated fabrication procedure, higher production costs, and lower stability of PSC. Although several reviews on HTMs have been published, progress on dopant free HTMs needs to be reviewed and analyzed. Here, a review covering most of the published reports on dopantfree HTMs is presented, and the device structure and fabrication method, HTM layer deposition techniques, and the efficiency and the stability of PSCs are addressed during discussions in each main category. Finally, an outlook on stability and PCE growth in PSCs based on dopant-free HTMs is presented.

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“…[55,56] GRMs are very versatile, offering ap ossibility to control the bandgap andb and alignment through chemical functionalization and edge modification. [68][69][70][71][72][73] In this work, we report ad etailed study focused on the stability of PSCs, with GRMs used in different components of the PSC. Moreover,t he use of liquid-phasee xfoliated (LPE) graphene flakes, [63] as well as graphene produced by bottom-up approaches, [64][65][66][67] can boost the charge-transport dynamics at the photo electrode (PE).…”

Section: Introductionmentioning

confidence: 99%

“…Finally,t he use of GRMs in PSCs has also been demonstratedt ob eb eneficial to increase devices lifetimeunder different stress conditions. [68][69][70][71][72][73] In this work, we report ad etailed study focused on the stability of PSCs, with GRMs used in different components of the PSC. This allowsu st oa ssess the influenceo fG RMs on the stability of PSCs.…”

Section: Introductionmentioning

confidence: 99%

Graphene–Perovskite Solar Cells Exceed 18 % Efficiency: A Stability Study

et al. 2016

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Interface engineering is performed by the addition of graphene and related 2 D materials (GRMs) into perovskite solar cells (PSCs), leading to improvements in the power conversion efficiency (PCE). By doping the mesoporous TiO layer with graphene flakes (mTiO +G), produced by liquid-phase exfoliation of pristine graphite, and by inserting graphene oxide (GO) as an interlayer between the perovskite and hole-transport layers, using a two-step deposition procedure in air, we achieved a PCE of 18.2 %. The obtained PCE value mainly results from improved charge-carrier injection/collection with respect to conventional PSCs. Although the addition of GRMs does not influence the shelf life, it is beneficial for the stability of PSCs under several aging conditions. In particular, mTiO +G PSCs retain more than 88 % of the initial PCE after 16 h of prolonged 1 sun illumination at the maximum power point. Moreover, when subjected to prolonged heating at 60 °C, the GO-based structures show enhanced stability with respect to mTiO +G PSCs, as a result of thermally induced modification at the mTiO +G/perovskite interface. The exploitation of GRMs in the form of dispersions and inks opens the way for scalable large-area production, advancing the possible commercialization of PSCs.

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Efficient and stable perovskite solar cells based on functional graphene-modified P3HT hole-transporting layer

Abstract: Organic–inorganic perovskite solar cells have recently emerged at the forefront of photovoltaics research.

Cited by 43 publications

References 34 publications

Two‐Dimensional Materials for Halide Perovskite‐Based Optoelectronic Devices

Two‐Dimensional Materials for Halide Perovskite‐Based Optoelectronic Devices

Dopant‐Free Hole Transporting Materials for Perovskite Solar Cells

Graphene–Perovskite Solar Cells Exceed 18 % Efficiency: A Stability Study

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