Charge Transporting Materials Grown by Atomic Layer Deposition in Perovskite Solar Cells

Cho, Young Joon; Jeong, Min Ji; Park, Ji Hye; Hu, Weiguang; Lim, Jongchul; Chang, Hyo Sik

doi:10.3390/en14041156

Cited by 4 publications

(4 citation statements)

References 52 publications

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“…The structure and morphology of the produced materials are influenced by the composition and chemistry of the vapor phase. The deposition temperature influences the material adherence and growth [ 44 ]. Xue et al reported the fabrication of MgO/InP heterostructures by means of atomic layer deposition.…”

Section: Magnesium Oxidementioning

confidence: 99%

MgO Heterostructures: From Synthesis to Applications

et al. 2022

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The energy storage capacity of batteries and supercapacitors has seen rising demand and problems as large-scale energy storage systems and electric gadgets have become more widely adopted. With the development of nano-scale materials, the electrodes of these devices have changed dramatically. Heterostructure materials have gained increased interest as next-generation materials due to their unique interfaces, resilient structures and synergistic effects, providing the capacity to improve energy/power outputs and battery longevity. This review focuses on the role of MgO in heterostructured magnetic and energy storage devices and their applications and synthetic strategies. The role of metal oxides in manufacturing heterostructures has received much attention, especially MgO. Heterostructures have stronger interactions between tightly packed interfaces and perform better than single structures. Due to their typical physical and chemical properties, MgO heterostructures have made a breakthrough in energy storage. In perpendicularly magnetized heterostructures, the MgO’s thickness significantly affects the magnetic properties, which is good news for the next generation of high-speed magnetic storage devices.

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Section: Magnesium Oxidementioning

confidence: 99%

MgO Heterostructures: From Synthesis to Applications

et al. 2022

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“…[7][8][9][10] In the last few years, the efficiency of PSCs has increased remarkably from 3.8% to 25.5% in the case of single-junction perovskite cells. [11][12][13] Many different methods are used to develop the fabrication of highquality perovskite film, like one-or two-step solution deposition methods, the evaporation technique, chemical vapor deposition, and the dip coating method. 2,[14][15][16][17][18] Among these procedures, the one-step deposition method represented the most common approach to fabricating efficient devices.…”

Section: Introductionmentioning

confidence: 99%

“…They have great optoelectronic properties such as tunable band gap, boarding range of absorption, and carrier mobility 7‐10 . In the last few years, the efficiency of PSCs has increased remarkably from 3.8% to 25.5% in the case of single‐junction perovskite cells 11‐13 . Many different methods are used to develop the fabrication of high‐quality perovskite film, like one‐ or two‐step solution deposition methods, the evaporation technique, chemical vapor deposition, and the dip coating method 2,14‐18 …”

Section: Introductionmentioning

confidence: 99%

Interface engineering at electron transport/perovskite layers using wetting mesoporous titanium dioxide to fabricate efficient and stable perovskite solar cells

Khaleel

Ahmed

2022

Intl J of Energy Research

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Summary The unique photovoltaic features of perovskites have encouraged researchers to use them as an active layer for solar cell applications. Recombination issue at electron transport layer (ETL)/perovskite interface is one of the reasons for performance reduction in perovskite solar cells (PSCs) and need to address. Hereof, we developed a simple and cheap method to modify this interface by wetting the mesoporous TiO2 ETL using mixed solvents of γ‐butyrolactone (GBL) and dimethyl sulfoxide (DMSO). With optimization of the ratio of GBL and DMSO, our results showed a smoother perovskite layer with fewer pinholes on it. In addition, ETL wetting affected perovskite grain sizes and passivated grain boundaries in it. The mentioned reasons reduced carriers' trap centers in the perovskite film and suppressed charge recombination processes within PSCs. The improved crystalline properties of the modified perovskite layer facilitate electron extraction at ETL/perovskite interface and reduce charge accumulation, which brings a champion efficiency of 18.72% for the treated devices higher than that of 15.21% for the untreated devices. Moreover, due to the boosted hydrophobic property of the modified perovskite film, the stability behavior of the related PSCs was improved remarkably.

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“…进行保形覆盖 [14][15][16] . Correa Baena等 [17] 通过低温 ALD 技术生长SnO 2 作为电子传输层, 消除了界面能级不匹配带来的电滞现象, 研制出开路电压高达 1.19 V, 效率超过18%的钙钛矿太阳电池.…”

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Preparation of high-performance large-area perovskite solar cells by atomic layer deposition of metal oxide buffer layer

Qu,

Zhao,

et al. 2024

Acta Phys. Sin.

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Perovskite solar cells have been widely recognized as the most promising new type of photovoltaic technology due to its rapid development of power conversion efficiency from 3.8% to over 26% in merely fifteen years. However, the high performances were achieved mainly on small area cells with active area lower than 0.1 cm2. When enlarging the active area of perovskite solar cells, the efficiency fell dramatically. How to reduce the gap between performances of small area and large area cells gradually becomes a critical point in the path towards the commercialization of perovskite photovoltaic technology. Herein, a strategy to pre-grow a thin layer of TiO2 on rough FTO substrate by atomic layer deposition method before spin-coating SnO2 nanoparticles was developed. The FTO substrate could be covered completely by TiO2 due to the intrinsic conformal film growth mode of atomic layer deposition, thus the direct contact between local protuberance of FTO and perovskite layer could be prevented and the current leakage phenomenon could be prevented. X-ray photoelectron spectroscopy, scanning electron microscopy, atomic force microscopy and dark current measurement further proved this point. Thanks to the approach, the repeatability and consistency of the small area cell fabrication technology on the same substrate were ameliorated obviously. The improved electron transport process revealed by photoluminescence results and incident light management process revealed by external quantum efficiency results also brought better solar cell performances. More importantly, highly efficient 0.5 cm2 large area perovskite solar cells were fabricated through optimization of TiO2 thicknesses. When growing 200 cycles TiO2 (~9 nm thickness) using atomic layer deposition technology, the champion large area perovskite solar cell possessed a power conversion efficiency as high as 24.8% (certified 24.65%). The device performances also showed excellent repeatability between different fabrication batches. The perovskite solar cell with atomic layer deposited TiO2 as buffer layer could retain over 95% of its initial efficiency after storage for 1500 hours under nitrogen atmosphere. The technique proposed in this paper could be helpful for the fabrication of perovskite solar cell modules in the realistic photovoltaic market and could be potentially extended to the large area fabrication of other perovskite optoelectronic devices such as light emitting diode, laser and detector.

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Charge Transporting Materials Grown by Atomic Layer Deposition in Perovskite Solar Cells

Cited by 4 publications

References 52 publications

MgO Heterostructures: From Synthesis to Applications

MgO Heterostructures: From Synthesis to Applications

Interface engineering at electron transport/perovskite layers using wetting mesoporous titanium dioxide to fabricate efficient and stable perovskite solar cells

Preparation of high-performance large-area perovskite solar cells by atomic layer deposition of metal oxide buffer layer

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