Copper iodide as inorganic hole conductor for perovskite solar cells with different thickness of mesoporous layer and hole transport layer

Huangfu, Minzan; Zhu, Gongbo; Xu, Kai; Cao, Meng; Gu, Feng; Wang, Linjun

doi:10.1016/j.apsusc.2015.09.215

Cited by 61 publications

(23 citation statements)

References 28 publications

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“…After eliminating the holes, continuous welldistributed large-grain perovskite crystals were obtained in 1.0 mol/L sample, leading to a good FF of 0.46. Thus, PCE for 1.0 mol/L sample is increased to 6.14%, which is competitive with that of most recently reported PSCs under similar structure [33][34][35][36][37][38][39]. This PCE is 30% higher than that of control samples, further confirming the advantages of SEI to prepare high quality perovskite films.…”

Section: Resultssupporting

confidence: 67%

Solution evaporation processed high quality perovskite films

Liu

Zhou

et al. 2018

Science Bulletin

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Section: Resultssupporting

confidence: 67%

Solution evaporation processed high quality perovskite films

Liu

Zhou

et al. 2018

Science Bulletin

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“…Usually, the CuI thin film on the perovskite layer prepared through chemical approaches is accompanied with the formation of small grains in the material, which leads to increased hole–electron recombination. The grain boundaries in such CuI films effectively act as an additional serial resistance during the transportation of the holes from the HTM to the metal contact …”

Section: Introductionmentioning

confidence: 99%

Two‐Step Physical Deposition of a Compact CuI Hole‐Transport Layer and the Formation of an Interfacial Species in Perovskite Solar Cells

et al. 2016

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A simple and practical approach is introduced for the deposition of CuI as an inexpensive inorganic hole-transport material (HTM) for the fabrication of low cost perovskite solar cells (PSCs) by gas-solid phase transformation of Cu to CuI. The method provides a uniform and well-controlled CuI layer with large grains and good compactness that prevents the direct connection between the contact electrodes. Solar cells prepared with CuI as the HTM with Au electrodes displays an exceptionally high short-circuit current density of 32 mA cm(-2) , owing to an interfacial species formed between the perovskite and the Cu resulting in a long wavelength contribution to the incident photon-to-electron conversion efficiency (IPCE), and an overall power conversion efficiency (PCE) of 7.4 %. The growth of crystalline and uniform CuI on a low roughness perovskite layer leads to remarkably high charge extraction in the cells, which originates from the high hole mobility of CuI in addition to a large number of contact points between CuI and the perovskite layer. In addition, the solvent-free method has no damaging side effect on the perovskite layer, which makes it an appropriate method for large scale applications of CuI in perovskite solar cells.

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“…Automated dropcasting 1.5-2.0 µm 6.0 Christians et al 19) Manual doctor blade ~400 nm 7.5 Sepalage et al 20) Spray coating 17.5 ± 1.5 µm 5.8 Huangfu et al 21) Spin coating + aging < 100 nm a) 6.5 This study a) Mostly embedded between perovskite crystals…”

Section: Figure Captionsmentioning

confidence: 82%

“…(TFB), 8) CuSCN, [9][10][11][12] NiO, [13][14][15] CuO-Cu2O [16][17][18] and CuI, [19][20][21] have been tested. Among these candidates, CuI is focused in this study by following features:…”

Section: Introductionmentioning

confidence: 99%

Perovskite solar cells with CuI inorganic hole conductor

Takahashi

Suzuki

2017

Jpn. J. Appl. Phys.

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An organic material, 2,2',7,7'-tetrakis(N,N-dip -methoxyphenylamine)9,9'-spirobifluorene (spiro-OMeTAD), is generally used as a hole conductor of perovskite solar cells (PSCs), but spiro-OMeTAD is much more expensive than other materials used in PSCs. In this study, we have prepared PSCs with a cost-effective CuI hole transport layer by spin coating. The merit of using spin coating for CuI is good compatibility with other steps, such as spin coating of a TiO2 electron transport layer and a perovskite active layer. The CuI-based PSC recorded power conversion efficiencies of η =2.22% (max) on the day of production and η =6.52% (max) after the 20 days of production. Moreover, the CuI-based PSC had a smaller hysteresis than the spiro-based PSC, suggesting that CuI is a highly promising alternative hole conductor for PSCs.

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Copper iodide as inorganic hole conductor for perovskite solar cells with different thickness of mesoporous layer and hole transport layer

Cited by 61 publications

References 28 publications

Solution evaporation processed high quality perovskite films

Solution evaporation processed high quality perovskite films

Two‐Step Physical Deposition of a Compact CuI Hole‐Transport Layer and the Formation of an Interfacial Species in Perovskite Solar Cells

Perovskite solar cells with CuI inorganic hole conductor

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