Synergistic interface and compositional engineering of inverted perovskite solar cells enables highly efficient and stable photovoltaic devices

Zhao, Jiayuan; Tavakoli, Rouhollah; Tavakoli, Mohammad Mahdi

doi:10.1039/c9cc04364k

Cited by 38 publications

(26 citation statements)

References 33 publications

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“…As one of the most competitive materials in the photovoltaic field, organic-inorganic hybrid halide lead perovskites (ABX 3 , where A is a monovalent cation, B is a divalent cation and X is a halide ion) have attracted great attention in recent years [1][2][3][4]. Through structural engineering [5,6], surface interface engineering [7,8], solvent engineering [9,10] and incident light management engineering [11,12], current organic-inorganic hybrid perovskite-based photovoltaic devices have demonstrated power conversion efficiencies (PCEs) of over 25.2% [13]. They show broad application prospects in the new generation of the green energy industry.…”

Section: Introductionmentioning

confidence: 99%

Efficiency Improvement of MAPbI3 Perovskite Solar Cells Based on a CsPbBr3 Quantum Dot/Au Nanoparticle Composite Plasmonic Light-Harvesting Layer

et al. 2020

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We demonstrate a method to enhance the power conversion efficiency (PCE) of MAPbI3 perovskite solar cells through localized surface plasmon (LSP) coupling with gold nanoparticles:CsPbBr3 hybrid perovskite quantum dots (AuNPs:QD-CsPbBr3). The plasmonic AuNPs:QD-CsPbBr3 possess the features of high light-harvesting capacity and fast charge transfer through the LSP resonance effect, thus improving the short-circuit current density and the fill factor. Compared to the original device without Au NPs, a 27.8% enhancement in PCE of plasmonic AuNPs:QD-CsPbBr3/MAPbI3 perovskite solar cells was achieved upon 120 μL Au NP solution doping. This improvement can be attributed to the formation of surface plasmon resonance and light scattering effects in Au NPs embedded in QD-CsPbBr3, resulting in improved light absorption due to plasmonic nanoparticles.

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Section: Introductionmentioning

confidence: 99%

Efficiency Improvement of MAPbI3 Perovskite Solar Cells Based on a CsPbBr3 Quantum Dot/Au Nanoparticle Composite Plasmonic Light-Harvesting Layer

et al. 2020

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“…In this regard, NiO is an inorganic HTL, showing good potential for the fabrication of high‐efficiency devices. [ 39,40 ] There are also many organic HTLs recently developed for efficient and stable PSCs, [ 41,42 ] but only small‐molecule HTLs show great potential to evaporate thermally without any decomposition. [ 43 ] For instance, Hsiao et al [ 44 ] used 4,4′‐cyclohexylidenebis[ N,N ‐bis(4‐methylphenyl)benzenamine](TAPC) as a HTL with evaporation potential and reported all vacuum‐processed PSCs with a PCE of up to 17.6%.…”

Section: Introductionmentioning

confidence: 99%

Efficient, Hysteresis‐Free, and Flexible Inverted Perovskite Solar Cells Using All‐Vacuum Processing

et al. 2020

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The fabrication of efficient perovskite solar cells (PSCs) using all‐vacuum processing is still challenging due to the limitations in the vacuum deposition of the hole transporting layer (HTL). Herein, inverted PSCs using copper (II) phthalocyanine (CuPC) as an ideal alternative HTL for vacuum processing are fabricated. After proper optimization, a PSC with a power conversion efficiency (PCE) of 20.3% is achieved, which is much better than the PCEs (16.8%) of devices with solution‐based CuPC. As it takes a long time to dissolve CuPC in the solution‐based device, the evaporation approach has better advantage in terms of fast processing. In addition, the device with the evaporated CuPC HTL indicates an excellent operational stability, showing only 9% PCE loss under continuous illumination after 100 h, better than its counterpart device. Interestingly, the device shows negligible hysteresis. As all fabrication processes are conducted at low temperatures, flexible PSCs are also fabricated on ITO/PET substrates and a PCE of 18.68% is obtained. After 200 bending cycles, the flexible device retains 87.5% of its initial PCE value, indicating its great flexibility. Herein, the role of a suitable HTL for the fabrication of all‐vacuum‐processing PSCs with great efficiency and stability is highlighted.

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“…Currently, the most commonly used oxides include TiO 2 [2,15], ZnO [16] although a variety of other metal oxides [17,18], such as Nb 2 O 5 [19] and SnO 2 [20,21], may also be used, allowing some control of the interfacial properties and variability in junctions formed between electrodes and the CH 3 NH 3 PbI 3 layer. Recently, reports of new metal oxide-based PSCs have demonstrated that PCEs in the range of 15~20% are possible via development and optimization of new oxide layers [22][23][24][25][26][27][28][29][30]. These inorganic oxides are considered excellent interfacial materials due to their superior stability and electrical properties.…”

Section: Introductionmentioning

confidence: 99%

Tungsten-Doped Zinc Oxide and Indium–Zinc Oxide Films as High-Performance Electron-Transport Layers in N–I–P Perovskite Solar Cells

et al. 2020

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Perovskite solar cells (PSCs) have attracted tremendous research attention due to their potential as a next-generation photovoltaic cell. Transition metal oxides in N–I–P structures have been widely used as electron-transporting materials but the need for a high-temperature sintering step is incompatible with flexible substrate materials and perovskite materials which cannot withstand elevated temperatures. In this work, novel metal oxides prepared by sputtering deposition were investigated as electron-transport layers in planar PSCs with the N–I–P structure. The incorporation of tungsten in the oxide layer led to a power conversion efficiency (PCE) increase from 8.23% to 16.05% due to the enhanced electron transfer and reduced back-recombination. Scanning electron microscope (SEM) images reveal that relatively large grain sizes in the perovskite phase with small grain boundaries were formed when the perovskite was deposited on tungsten-doped films. This study demonstrates that novel metal oxides can be used as in perovskite devices as electron transfer layers to improve the efficiency.

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Synergistic interface and compositional engineering of inverted perovskite solar cells enables highly efficient and stable photovoltaic devices

Abstract: Interface engineering by PFN-P2 and compositional engineering using water additive enable an efficient and stable perovskite solar cell with 20.5% efficiency.

Cited by 38 publications

References 33 publications

Efficiency Improvement of MAPbI3 Perovskite Solar Cells Based on a CsPbBr3 Quantum Dot/Au Nanoparticle Composite Plasmonic Light-Harvesting Layer

Efficiency Improvement of MAPbI3 Perovskite Solar Cells Based on a CsPbBr3 Quantum Dot/Au Nanoparticle Composite Plasmonic Light-Harvesting Layer

Efficient, Hysteresis‐Free, and Flexible Inverted Perovskite Solar Cells Using All‐Vacuum Processing

Tungsten-Doped Zinc Oxide and Indium–Zinc Oxide Films as High-Performance Electron-Transport Layers in N–I–P Perovskite Solar Cells

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