Extending the environmental lifetime of unpackaged perovskite solar cells through interfacial design

Chen, Haiwei; Hou, Yi; Halbig, Christian E.; Chen, Shi; Zhang, Hong; Li, Ning; Guo, Fei; Tang, Xiaofeng; Gasparini, Nicola; Levchuk, Ievgen; Kahmann, Simon; Quiroz, César Omar Ramírez; Osvet, Andres; Eigler, Siegfried; Brabec, Christoph J.

doi:10.1039/c6ta03755k

Cited by 50 publications

(37 citation statements)

References 48 publications

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“…These HPSCs delivered a PCE of 12.94% with negligible current hysteresis and good device stability in air. Recently, Brabec et al developed a solution‐processed covalently sulfated graphene oxide (oxo‐G 1 ) as the HTL for HPSCs of ITO/oxo‐G 1 /MAPbI 3 /PCBM/ZnO/Al (Figure b) . oxo‐G 1 was synthesized by mild oxidation, so the carbon lattice was mostly preserved without severe in‐plane defects.…”

Section: D Materials For Halide Perovskite Solar Cellsmentioning

confidence: 99%

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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%

Section: D Materials For Halide Perovskite Solar Cellsmentioning

confidence: 99%

Two‐Dimensional Materials for Halide Perovskite‐Based Optoelectronic Devices

2017

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“…Particularly remarkable is the high reproducibility found for the PSCs based on RGO‐PhOHex@P3HT HTM. This is indeed a key requirement for planning the fabrication of large area (>50 cm 2 ) PSCs and will constitute the subject of our future investigations, together with studies of the influence of these functionalized RGO@P3HT HTM on device stability to environmental factors …”

Section: Discussionmentioning

confidence: 99%

Interfacial Morphology Addresses Performance of Perovskite Solar Cells Based on Composite Hole Transporting Materials of Functionalized Reduced Graphene Oxide and P3HT

et al. 2018

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The development of novel hole transporting materials (HTMs) for perovskite solar cells (PSCs) that can enhance device's reproducibility is a largely pursued goal, even to the detriment of a very high efficiency, since it paves the way to an effective industrialization of this technology. In this work, we study the covalent functionalization of reduced graphene oxide (RGO) flakes with different organic functional groups with the aim of increasing the stability and homogeneity of their dispersion within a poly(3‐hexylthiophene) (P3HT) HTM. The selected functional groups are indeed those recalling the two characteristic moieties present in P3HT, i.e., the thienyl and alkyl residues. After preparation and characterization of a number of functionalized RGO@P3HT blends, we test the two containing the highest percentage of dispersed RGO as HTMs in PSCs and compare their performance with that of pristine P3HT and of the standard Spiro‐OMeTAD HTM. Results reveal the big influence of the morphology adopted by the single RGO flakes contained in the composite HTM in driving the final device performance and allow to distinguish one of these blends as a promising material for the fabrication of highly reproducible PSCs.

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“…[ , ] However, there is also evidence that graphene and its derivatives are suitable for use as additives in charge transport layers given that they open a bandgap. [ , ] This was proven when graphene was introduced into the ETL by Tse et al . in 2013, by combining graphene and TiO 2 , and reached a notable PCE of 15.6%.…”

Section: Two‐dimensional Carbon Structurementioning

confidence: 97%

Carbon Materials in Perovskite Solar Cells: Prospects and Future Challenges

Ferguson

Silva

Zhang

2019

Energy & Environ Materials

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Metal halide perovskite solar cells are emerging candidates for next‐generation thin‐film photovoltaic devices with the potential for extremely low fabrication cost and high power conversion efficiency. Perovskite solar cells have demonstrated a rapid development in device performance over the last decade, from an initial 3.81% to a most recently certified 24.2%, though the challenges of long‐term stability and lead toxicity still remain. Carbon materials, ranging from zero‐dimensional carbon quantum dots to three‐dimensional carbon black materials, are promising candidates for the enhancement of both efficiency and stability of perovskite solar cells, offering unique advantages for incorporation into various device architectures. In this review article, we present a concise overview of important and exciting advancements of perovskite solar cells that incorporate different dimensions of carbon material in their device architectures in an effort to simultaneously improve device performance and long‐term stability. We also discuss the major advantages and potential challenges of each technique that has been developed in the most recent work. Finally, we outline the future opportunities toward more efficient and stable perovskite solar cells utilizing carbon materials.

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Extending the environmental lifetime of unpackaged perovskite solar cells through interfacial design

Abstract: Solution-processed oxo-functionalized graphene is used to substitute hydrophilic PEDOT:PSS as an anode interfacial layer for perovskite solar cells. The resulting devices exhibit a reasonable PCE of 15.2% and improved stability.

Cited by 50 publications

References 48 publications

Two‐Dimensional Materials for Halide Perovskite‐Based Optoelectronic Devices

Two‐Dimensional Materials for Halide Perovskite‐Based Optoelectronic Devices

Interfacial Morphology Addresses Performance of Perovskite Solar Cells Based on Composite Hole Transporting Materials of Functionalized Reduced Graphene Oxide and P3HT

Carbon Materials in Perovskite Solar Cells: Prospects and Future Challenges

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