Molecular Engineering Using an Anthanthrone Dye for Low‐Cost Hole Transport Materials: A Strategy for Dopant‐Free, High‐Efficiency, and Stable Perovskite Solar Cells

Pham, Hong Duc; Trang, Thu; Kim, Jinhyun; Charbonneau, Cécile; Manzhos, Sergei; Feron, Krishna; Tsoi, Wing Chung; Durrant, James R.; Jain, Sagar M.; Sonar, Prashant

doi:10.1002/aenm.201703007

Cited by 161 publications

(113 citation statements)

References 94 publications

(52 reference statements)

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“…2), the MBI films showed no trace of degradation of the crystalline quality. This confirms that the degradation is caused at the Spiro/MBI interface as a result of more hygroscopic nature of Spiro-OMeTAD as compare with the P3HT 42,50 . In our previous study, we have shown the notorious, degradation susceptible behaviour of doped Spiro-OMeTAD HTM reflected in the degradation of PSCs.…”

Section: Resultssupporting

confidence: 69%

“…P3HT-poly (3-hexylthiophene-2,5-diyl) (99.9% Sigma-Aldrich) was prepared and deposited as previously described in ref. 28 and used as HTM, and the conventional Spiro-OMeTAD (2,2′,7,7′-tetrakis(N,N′-di-p-methoxyphenylamino)-9,9′-spirbiuorene) was prepared and deposited as described previously 42 . Finally, ≈150 -nm thick carbon paste was applied on the sample to form a counter electrode.…”

Section: Methodsmentioning

confidence: 99%

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Green fabrication of stable lead-free bismuth based perovskite solar cells using a non-toxic solvent

2019

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The very fast evolution in certified efficiency of lead-halide organic-inorganic perovskite solar cells to 24.2%, on par and even surpassing the record for polycrystalline silicon solar cells (22.3%), bears the promise of a new era in photovoltaics and revitalisation of thin film solar cell technologies. However, the presence of toxic lead and particularly toxic solvents during the fabrication process makes large-scale manufacturing of perovskite solar cells challenging due to legislation and environment issues. For lead-free alternatives, non-toxic tin, antimony and bismuth based solar cells still rely on up-scalable fabrication processes that employ toxic solvents. Here we employ non-toxic methyl-acetate solution processed (CH 3 NH 3 ) 3 Bi 2 I 9 films to fabricate lead-free, bismuth based (CH 3 NH 3 ) 3 Bi 2 I 9 perovskites on mesoporous TiO 2 architecture using a sustainable route. Optoelectronic characterization, X-ray diffraction and electron microscopy show that the route can provide homogeneous and good quality (CH 3 NH 3 ) 3 Bi 2 I 9 films. Fine-tuning the perovskite/hole transport layer interface by the use of conventional 2,2′,7,7′-tetrakis (N,N′-di-p-methoxyphenylamino)−9,9′-spirbiuorene, known as Spiro-OMeTAD, and poly(3-hexylthiophene-2,5-diyl -P3HT as hole transporting materials, yields power conversion efficiencies of 1.12% and 1.62% under 1 sun illumination. Devices prepared using poly(3-hexylthiophene-2,5-diyl hole transport layer shown 300 h of stability under continuous 1 sun illumination, without the use of an ultra violet-filter.

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Section: Resultssupporting

confidence: 69%

Section: Methodsmentioning

confidence: 99%

Green fabrication of stable lead-free bismuth based perovskite solar cells using a non-toxic solvent

2019

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“…Employing these cost‐efficient solution processable small molecule HTMs in inverted PSCs have led to the PCE of 16.32% for TPA‐TVT‐TPA and 14.63% for TPA‐NAP‐TPA. In a very recent study, Pham et al have reported highly efficient and humidity‐resistant PSCs, based on new small molecule hole transporting material (HTM) made from a cost‐effective precursor anthanthrone (ANT) dye . The developed HTM, 4,4′‐(6,12‐bis(octyloxy)‐6,12‐dihydronaphtho[7,8,1,2,3‐ nopqr ]tetraphene‐4,10‐diyl)bis( N,N ‐bis(4‐methoxyphenyl)aniline) (TPA‐ANT‐TPA) ( 71 ) was employed in mesoscopic PSCs with no dopants and efficiencies as high as 17.5% was achieved.…”

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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“…Clearly, without any additives, HTMs should exhibit suitable energy level, high hole mobility, and conductivity . To this end, many different types of core structure, such as truxene, triazatruxene, anthanthrone, fluoranthene, diacenaphtho[1,2‐b:1′,2′‐d]thiophene, and so on, have been extensively investigated in the dopant‐free HTMs . As demonstrated in Figure , the core structures of small organic dopant‐free HTMs possess the polycyclic aromatic hydrocarbon rings, which can improve the intermolecular π–π interactions and the corresponding hole mobility.…”

Section: Introductionmentioning

confidence: 99%

Hole Transport Materials Based on 6,12‐Dihydroindeno[1,2‐b]fluorine with Different Periphery Groups: A New Strategy for Dopant‐Free Perovskite Solar Cells

Liu

et al. 2019

Adv Funct Materials

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Although several hole‐transporting materials (HTMs) have been designed to obtain perovskite solar cells (PSCs) devices with high performance, the dopant‐free HTMs for efficient and stable PSCs remain rare. Herein, a rigid planar 6,12‐dihydroindeno[1,2‐b]fluorine (IDF) core with different numbers of bulky periphery groups to construct dopant‐free HTMs of IDF‐SFXPh, IDF‐DiDPA, and IDF‐TeDPA is modified. Thanks to the contributions of the planar IDF core and the twisted SFX periphery groups, the dopant‐free IDF‐SFXPh‐based PSCs device achieves a device performance of 17.6%, comparable to the doped 2,2′,7,7′‐tetrakis(N,N‐di‐p‐methoxyphenylamine)‐9,9′‐spirobifluorene (spiro‐OMeTAD)‐based device (17.6%), with much enhanced device stability under glovebox and ambient conditions.

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Molecular Engineering Using an Anthanthrone Dye for Low‐Cost Hole Transport Materials: A Strategy for Dopant‐Free, High‐Efficiency, and Stable Perovskite Solar Cells

Cited by 161 publications

References 94 publications

Green fabrication of stable lead-free bismuth based perovskite solar cells using a non-toxic solvent

Green fabrication of stable lead-free bismuth based perovskite solar cells using a non-toxic solvent

Dopant‐Free Hole Transporting Materials for Perovskite Solar Cells

Hole Transport Materials Based on 6,12‐Dihydroindeno[1,2‐b]fluorine with Different Periphery Groups: A New Strategy for Dopant‐Free Perovskite Solar Cells

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