Low-temperature solution-processed p-type vanadium oxide for perovskite solar cells

Sun, Hui; Hou, Xiaomeng; Wei, Qiulong; Liu, Huawei; Yang, Kecheng; Wang, Wei; An, Qinyou; Rong, Yaoguang

doi:10.1039/c6cc03740b

Cited by 74 publications

(51 citation statements)

References 24 publications

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“…Interestingly, In doped CuCrO 2 PSCs showed improved performances as shown in Figure . The performances are among the best performed PSCs with oxide based HTL as shown in Table S5 in the Supporting Information . Additionally, the HTL using CuCrO 2 and In doped CuCrO 2 NPs offer ignorable hysteresis (Figure S10, Supporting Information) due to efficient hole extraction.…”

Section: Resultsmentioning

confidence: 98%

Multifunctional Synthesis Approach of In:CuCrO₂ Nanoparticles for Hole Transport Layer in High‐Performance Perovskite Solar Cells

Yang

Ouyang

Huang

et al. 2019

Adv Funct Materials

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While there are very limited studies of doped ternary metal oxide based hole transport materials, a multifunctional synthesis approach of In doped CuCrO 2 nanoparticles (NPs) as efficient hole transport layers (HTLs) including simplifying the synthesis requirements is proposed, enabling doping and achievement of treatment-free HTLs. Remarkably, compared with conventional methods for synthesizing CuCrO 2 NPs, the newly proposed azeotropic promoted approach dramatically reduces the reaction time by 90% and the calcination temperature by one-third, which not only promotes high throughput production but also reduces power consumption and cost in synthesis. Equally important, indium is successfully doped into CuCrO 2 , which is fundamentally difficult in low temperature processes. The In doping offers less d-d transition of Cr 3+ and p-type doping characteristics for improving HTL transmittance and conductivity, respectively. Interestingly, In doped CuCrO 2 HTL with these improvements can be achieved by a simple ambient-condition process and exhibits thermal stability up to 200 °C, which allows perovskite solar cells (PSCs) to achieve a power conversion efficiency of 20.54%. Meanwhile, the devices show good repeatability and photostability. Consequently, the work contributes to establishing a simple approach to realize pristine and doped multinary oxides based HTL for the development of practical and high performing PSCs.

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Section: Resultsmentioning

confidence: 98%

Multifunctional Synthesis Approach of In:CuCrO₂ Nanoparticles for Hole Transport Layer in High‐Performance Perovskite Solar Cells

Yang

Ouyang

Huang

et al. 2019

Adv Funct Materials

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“…They used low‐temperature solution process method to deposit VO x on ITO substrate and obtain uniform and pinhole less surface. Such device exhibited a PCE of 14.23% with ignorable hysteresis …”

Section: Inorganic Hole Transporting Materials In Pscsmentioning

confidence: 99%

A Review of Inorganic Hole Transport Materials for Perovskite Solar Cells

Kung

Lin

et al. 2018

Adv Materials Inter

226

123

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IntroductionIn recent decades, the world has come to a consensus that new green energy sources are vital for sustainable development. Solar energy has been regarded as an alternative source of energy supply. Photovoltaic (PV) technology has progressed for decades with massive efforts devoted. Alternative technologies for photon to electron power conversion include, for instance, This review presents various hole transport layers (HTLs) employed in perovskite solar cells (PSCs) in pursuing high power conversion efficiency (PCE) and functional stability. The PSCs have achieved high PCE (over 23%, certified by NREL) and more efforts have been devoted into research for stability enhancement. Inorganic HTLs become a popular choice as selective contact materials because of their intrinsic chemical stability and low cost. HTLs and electron transport layers (ETLs) are critical components of PSCs due to the requirement to create charge collection selectivity. Herein the authors provide an overview on inorganic HTLs synthesis, properties, and their application in various PSCs for both mesoporous and planar architectures. InorganicHTLs with appropriate properties, such as proper energy level and high carrier mobility, can not only assist with charge transport, but also improve the stability of PSCs under ambient conditions. The importance of interfacial chemistry and interfacial charge transport is further addressed to understand the underlying mechanism of related degradation and carrier dynamic. It is expected that the success of the inorganic HTL in PSCs can stimulate further research and bring real impact for future photovoltaic technologies.The ORCID identification number(s) for the author(s) of this article can be found under https://doi.org/10.1002/admi.201800882. super-mesostructure Al 2 O 3 scaffold, achieving a PCE above 9% [6] and 10%, [7] respectively.

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“…There are several kinds of device architectures (conventional mesoporous, conventional planar, inverted planar, HTLs‐ or ETLs‐free, etc) for PSCs, and the development of inorganic transport materials is crucial for stable and efficient devices . In recent years, several inorganic p‐type semiconductors, such as CuSCN, CuI, NiO x , and VO x , have been developed as HTLs in the inverted planar PSCs …”

Section: Device Photovoltaic Parameters Of Pscs With Different Niox Hmentioning

confidence: 99%

Deepening the Valance Band Edges of NiO_x Contacts by Alkaline Earth Metal Doping for Efficient Perovskite Photovoltaics with High Open‐Circuit Voltage

Qiao

Lin

et al. 2019

Solar RRL

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Organometallic halide perovskite solar cells (PSCs) are rapidly evolving as the promising photovoltaic technologies with high record efficiency over 24%. The inorganic p‐type semiconductor NiOx is extensively used as important hole transport layers for the realization of stable and hysteresis‐free solar cells due to their good electronic properties, facile fabrication, and excellent chemical endurance. However, the critical issues of NiOx films including poor intrinsic conductivity and mismatched band alignment limit further improvement of the device performance. Herein, it is demonstrated that a versatile alkaline earth metal (Mg, Ca, Sr, and Ba) doping strategy can effectively engineer the electronic properties of NiOx contacts in inverted planar PSCs. Alkaline earth metal doping can deepen valence band maximum and enhance the hole conductivity of NiOx films, which better aligns the energy band in solar cells. The champion device based on Sr‐doped NiOx films attains a power conversion efficiency of 19.49% with a high open‐circuit voltage (VOC) of 1.14 V for NiOx‐based CH3NH3PbI3 devices. The resulted device shows negligible hysteresis and high stability as well. This finding provides a systematic doping strategy to further improve the performance of inverted planar PSCs.

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Low-temperature solution-processed p-type vanadium oxide for perovskite solar cells

Cited by 74 publications

References 24 publications

Multifunctional Synthesis Approach of In:CuCrO₂ Nanoparticles for Hole Transport Layer in High‐Performance Perovskite Solar Cells

Multifunctional Synthesis Approach of In:CuCrO₂ Nanoparticles for Hole Transport Layer in High‐Performance Perovskite Solar Cells

A Review of Inorganic Hole Transport Materials for Perovskite Solar Cells

Deepening the Valance Band Edges of NiO_x Contacts by Alkaline Earth Metal Doping for Efficient Perovskite Photovoltaics with High Open‐Circuit Voltage

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Low-temperature solution-processed p-type vanadium oxide for perovskite solar cells

Cited by 74 publications

References 24 publications

Multifunctional Synthesis Approach of In:CuCrO2 Nanoparticles for Hole Transport Layer in High‐Performance Perovskite Solar Cells

Multifunctional Synthesis Approach of In:CuCrO2 Nanoparticles for Hole Transport Layer in High‐Performance Perovskite Solar Cells

A Review of Inorganic Hole Transport Materials for Perovskite Solar Cells

Deepening the Valance Band Edges of NiOx Contacts by Alkaline Earth Metal Doping for Efficient Perovskite Photovoltaics with High Open‐Circuit Voltage

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Multifunctional Synthesis Approach of In:CuCrO₂ Nanoparticles for Hole Transport Layer in High‐Performance Perovskite Solar Cells

Multifunctional Synthesis Approach of In:CuCrO₂ Nanoparticles for Hole Transport Layer in High‐Performance Perovskite Solar Cells

Deepening the Valance Band Edges of NiO_x Contacts by Alkaline Earth Metal Doping for Efficient Perovskite Photovoltaics with High Open‐Circuit Voltage