Recent Advances in Synthesis and Properties of Hybrid Halide Perovskites for Photovoltaics

Vidyasagar, C. C.; Flores, Blanca; Jiménez-Pérez, Vı́ctor M.

doi:10.1007/s40820-018-0221-5

Cited by 62 publications

(54 citation statements)

References 240 publications

(217 reference statements)

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“…As in the case of graphite and carbon black back electrodes, organic [227][228][229] and inorganic 149 HTMs have been exploited to further increase the hole extraction ability of CNTs. 230,231 Aitola et al reported a CNT-based PSC with spiro-OMeTAD as the HTM. 228 An average PCE of 14.3% was achieved, still lower than that obtained with gold as the back electrode (18.4%).…”

Section: Carbon Nanotube-based Back Electrodesmentioning

confidence: 99%

Carbon-based materials for stable, cheaper and large-scale processable perovskite solar cells

Fagiolari

Bella

2019

Energy Environ. Sci.

258

188

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Almost ten years after their first use in the photovoltaic (PV) field, perovskite solar cells (PSCs) are now hybrid devices that, in addition to having reached silicon performance, can accelerate the energy transition and boost the use of abundant elements for their manufacturing process. However, noble metals (in particular gold) represent the most typically used sources for back electrode fabrication, and this issue has been intensively considered by the research community in the last five years. This review shows how the most promising solution, considering also the need to develop a large-scale production process, is based on the use of carbon-based materials for the preparation of back electrodes. Graphite, carbon black, graphene and carbon nanotubes (CNTs) have been proposed, functionalized and characterized, leading to laboratory-scale solar cells and modules capable of providing excellent efficiencies and ensuring stability greater than those of gold-based devices. Strengthened by these results and its hydrophobizing properties, carbon has also started to be used as an electron transporting material (ETM), with excellent results on both rigid and flexible substrates. This review discusses the major advances and the updated state-of-the-art in the carbon-based PSC scenario, keeping a solid trajectory where the accessibility, low cost, high electrical conductivity, chemical stability and controllable porosity of carbon are highlighted and exploited in the design of upscalable hybrid solar cells. Broader contextToday, more than 75% of the world energy demand is met by traditional, non-sustainable energy resources, mainly based on coal, natural gas and oil. Photovoltaics represents a concrete action to mitigate fossil fuel consumption, and among all the developed solar cells, perovskite-based ones have shown the highest increase in terms of efficiency (currently above 25%). Halide perovskites, as a family of new-generation semiconductor materials, are also exploitable for light-emitting devices, photodetectors and memristors, but their use in photovoltaics gives rise to outstanding performances. Here, photogenerated charges pass through electron/hole transporting materials and are transferred to the external circuit by front and back electrodes. While the front electrode is a common conductive glass, many issues are now under study concerning the back electrode, traditionally made of gold. Indeed, replacing this expensive metal with a much cheaper alternative is vital for realizing affordable solar technologies. Carbon, in its multiple forms, represents the winning solution and the scientific community has recently shown its large scale processability, its power as a stability booster and some interesting effects at the perovskite/electrode interface. This review shows how carbon is becoming the winning ingredient for the scaling up and worldwide diffusion of perovskite solar cells.

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Section: Carbon Nanotube-based Back Electrodesmentioning

confidence: 99%

Carbon-based materials for stable, cheaper and large-scale processable perovskite solar cells

Fagiolari

Bella

2019

Energy Environ. Sci.

258

188

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“…PVD and CVD seem more suited for the deposition of uniform films on textured substrates. Nevertheless, a variety of charge transport and charge blocking layers has been suggested and successfully implemented including well-established materials like Spiro-MeOTAD and TiO 2 or novel materials like graphene oxide or Cu-phthalocyanine [78][79][80][81][82][83]. Furthermore, it might be necessary to use multiple layers to fulfill all the requirements of the contact layers.…”

Section: Device Design and Materials Propertiesmentioning

confidence: 99%

Perovskite/Silicon Tandem Solar Cells: From Detailed Balance Limit Calculations to Photon Management

et al. 2019

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• Thermodynamic and detailed balance calculations are provided to derive guideline for the optimization of perovskite solar cells. • The influence of photon management on the energy conversion efficiency of perovskite solar cells is discussed. • An optimized solar cell design is proposed, which allows for realizing perovskite/silicon tandem solar cell with an energy conversion efficiency exceeding 32%.

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“…There are many factors at the preparation stage which can induce defects in MHP . However, when the sample is already prepared, ion migration is probably one of the most important phenomenon responsible for further sample evolution and its eventual degradation .…”

Section: Possible Mechanisms Of Pl Response Of Mapbx3 Polycrystals Tomentioning

confidence: 99%

“…[27] There are many factors at the preparation stage which can induce defects in MHP. [40,41] However, when the sample is already prepared, ion migration is probably one of the most important phenomenon responsible for further sample evolution and its eventual degradation. [17,18,42] The dominant species for ion migration are most likely the halogen ions (e.g., I − in MAPbI 3 ), however MA + and others can also migrate but with higher activation energy.…”

Section: Possible Mechanisms Of Pl Response Of Mapbx 3 Polycrystals Tmentioning

confidence: 99%

Creation and Annihilation of Nonradiative Recombination Centers in Polycrystalline Metal Halide Perovskites by Alternating Electric Field and Light

Chen

Dobrovolsky

et al. 2019

Advanced Optical Materials

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Metal halide perovskites are promising optoelectronic materials. Their electronic properties however are rather unstable which is often assigned to ion migration. Ion migration can be readily influenced by an electric field (EF). Here, the response of photoluminescence (PL) of individual MAPbX3 (MA = CH3NH3, X = I, Br) sub‐micrometer‐sized polycrystals to EF is studied. Alternating EF with frequency higher than 10 Hz is found to reversibly quench PL. It is proposed that an alternating EF when applied together with light increases ion migration. This leads to a shift in the equilibrium between creation and annihilation of defects toward higher concentration of nonradiative recombination centers. The PL quenching is found to increase with increasing frequency of the field. This can be rationalized by the frequency dependence of the dielectric constant, leading to stronger internal fields for high modulation frequencies compared to, e.g., a constant EF with the same external amplitude. PL quenching and enhancement observed under constant EF are hypothesized to be due to a reconfiguration of already existing nonradiative recombination centers situated on grain boundaries. The control of perovskite PL by alternating EF reported here can find applications in optoelectronic devices.

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Recent Advances in Synthesis and Properties of Hybrid Halide Perovskites for Photovoltaics

Cited by 62 publications

References 240 publications

Carbon-based materials for stable, cheaper and large-scale processable perovskite solar cells

Carbon-based materials for stable, cheaper and large-scale processable perovskite solar cells

Perovskite/Silicon Tandem Solar Cells: From Detailed Balance Limit Calculations to Photon Management

Creation and Annihilation of Nonradiative Recombination Centers in Polycrystalline Metal Halide Perovskites by Alternating Electric Field and Light

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