Improving the efficiency and environmental stability of inverted planar perovskite solar cells via silver-doped nickel oxide hole-transporting layer

Wei, Ying; Yao, Kai; Wang, Xiaofeng; Jiang, Yihua; Liu, Xueyuan; Zhou, Naigen; Li, Fan

doi:10.1016/j.apsusc.2017.08.184

Cited by 100 publications

(67 citation statements)

References 44 publications

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“…The sol‐gel spin coating route is particularly appealing because of its low cost and because it offers the possibility to implement doping, by, e.g., copper, easily. Other doping elements, such as Li, Ag, Co, Zn, and Cs have also been successfully introduced into NiO, resulting in improved conductivity. However, considering the different oxidation states and the different ionic sizes of the dopants listed, it is unlikely that the doping mechanism is the same for every strategy.…”

Section: Introductionmentioning

confidence: 99%

From Bulk to Surface: Sodium Treatment Reduces Recombination at the Nickel Oxide/Perovskite Interface

Girolamo

Phung

Jost

et al. 2019

Adv Materials Inter

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The effect of sodium doping in NiO as a contact layer for perovskite solar cells is investigated. A combined X‐ray diffraction and X‐ray photoelectron spectroscopy analysis reveals that Na+ mostly segregates as NaOx/NaCl species around NiO crystallites, with the effect of reducing interface capacitance as revealed by impedance spectroscopy. Inspired by this finding, the NiO/perovskite interface in perovskite solar cells is modified via insertion of an ultrathin NaCl interlayer, which increases the NiO work‐function by 0.3 eV. This leads to an increase of power conversion efficiency, approaching 18%, and open‐circuit voltage due to a remarkable suppression of surface recombination, as revealed by photoluminescence analysis and light intensity–dependent electrical measurements.

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Section: Introductionmentioning

confidence: 99%

From Bulk to Surface: Sodium Treatment Reduces Recombination at the Nickel Oxide/Perovskite Interface

Girolamo

Phung

Jost

et al. 2019

Adv Materials Inter

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“…17 Recently, NiO x layers, obtained through a sol-gel process from nickel organic salts precursors, have been successfully utilized in organic (OPV) and perovskite photovoltaic devices, showing improved device performance and stability. [18][19][20][21][22][23][24] However, the used sol-gel process required a high temperature treatment (250-400 C) to induce the decomposition of the precursor into a crystalline NiO x nanoparticle (NP) layer followed by a plasma treatment which further oxidizes the nanoparticles. The latter treatment enhances the non-stoichiometry of mixed nickel oxidation states, and, in-turn, the layer's conductivity.…”

Section: Introductionmentioning

confidence: 99%

Nanocomposite of nickel oxide nanoparticles and polyethylene oxide as printable hole transport layer for organic solar cells

Ruscello¹,

Sarkar

Levitsky

et al. 2019

Sustainable Energy Fuels

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“…The simple solution‐processing method provides the opportunity for the fabrication of large‐area and flexible PSCs (Figure b). Zhou et al demonstrated the high‐performance p‐i‐n PSCs employing Ag‐doped NiO x HTL with favorable optical transparency and electrical conductivity. The resulting device showed a prominent improvement in PCE from 13.46% (NiO x based control device) to 16.86% (Figure c).…”

Section: Doped Htls In Planar Perovskite Solar Cellsmentioning

confidence: 99%

Section: Doped Htls In Planar Perovskite Solar Cellsmentioning

confidence: 99%

Doped Charge‐Transporting Layers in Planar Perovskite Solar Cells

Wang

Liao

2018

Advanced Optical Materials

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mesostructured semiconductor (m-TiO 2 , m-SnO 2 , and m-ZnO) or insulating (Al 2 O 3 , and ZrO 2 ) metal oxide as the electrontransporting layer (ETL) and/or scaffold layer is fabricated on the compact layer, following by a coating of the perovskite active layer. A hole-transporting layer (HTL) is then deposited, followed by the evaporation of a metal anode. [7][8][9] However, the deposition of the mesoscopic ETLs generally needs a processing temperature which is higher than 450 °C to improve the optoelectrical properties of the mesoporous layer. [10] The mesostructured semiconductor scaffold can be totally removed when fabricating the planar devices with an n-i-p structure (e.g., fluorine-doped tin oxide (FTO)/TiO 2 /MAPbI 3−x Cl x /Spiro-OMeTAD/Ag). In addition, planar PSCs with an p-i-n construction have also been fabricated by using poly(3,4-ethylene dioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) as the hole-transporting layer and fullerene derivatives as the electron-transporting layer. [11] Compared to mesoscopic devices, the fabrication of planar heterojunction (PHJ) PSCs does not need high temperature process, offering possibilities of achieving flexible devices on plastic substrates and demonstrating potential application in lightweight and wearable electronics. Great efforts have been devoted to fabricate high-performance planar PSCs including the perovskite morphology and crystal optimization, [12,13] the optimal selection of HTLs, and the rational design of ETLs. [14,15] Particularly, both HTL and ETL play very important role in enhancing the device performance of the planar PSCs. For example, 6,6-phenylC61butyric acid methyl ester (PCBM) is a commonly used ETM in p-i-n PSCs. After that, more and more electrontransporting materials (ETMs), such as TiO 2 , [16] ZnO, [17] WO 3 , [18] SnO 2 , [19] and ZnSnO 4 [20] with decreased cost, are developed for n-i-p PSCs. For HTMs, 2,2′,7,7′-tetrakis-(N,N-dip-methoxyphenylamine) 9,9′-spirobifluorene (Spiro-OMeTAD), poly-3-hexylthiophene (P3HT), and poly-triarylamine (PTAA) are utilized in n-i-p PSCs. [21] What is more, PEDOT:PSS, NiO, CuI, CuSCN, CuO x , MoO x , graphene oxide (GO), and reduced graphene oxide (rGO) have been widely employed as HTMs in p-i-n PSCs. [22][23][24][25][26][27] With significant efforts on proposing device architectures, optimizing perovskite compositions, developing new deposition techniques for high-quality perovskite films, and designning various HTLs and ETLs, the PCE of the planar PSCs has been reached over 23%. Nevertheless, PSCs are still in the early stages for commercialization owing to their existing issues such as unsatisfied efficiency, unstable device performance, Organometal halide perovskite solar cells (PSCs) are brought to the forefront of research focus in photovoltaics field with a rapid efficiency rising over 22% in the past few years. Interface engineering with suitable hole-transporting layer (HTL) and/or electron-transporting layer (ETL) plays very important roles in controlling the charge carrier behavior in...

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Improving the efficiency and environmental stability of inverted planar perovskite solar cells via silver-doped nickel oxide hole-transporting layer

Cited by 100 publications

References 44 publications

From Bulk to Surface: Sodium Treatment Reduces Recombination at the Nickel Oxide/Perovskite Interface

From Bulk to Surface: Sodium Treatment Reduces Recombination at the Nickel Oxide/Perovskite Interface

Nanocomposite of nickel oxide nanoparticles and polyethylene oxide as printable hole transport layer for organic solar cells

Doped Charge‐Transporting Layers in Planar Perovskite Solar Cells

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