scholarly journals High-phase purity two-dimensional perovskites with 17.3% efficiency enabled by interface engineering of hole transport layer

2021 ◽  
pp. 100601
Author(s):  
Siraj Sidhik ◽  
Yafei Wang ◽  
Wenbin Li ◽  
Hao Zhang ◽  
Xinjue Zhong ◽  
...  
Keyword(s):  
Hole Transport ◽  
Transport Layer ◽  
Hole Transport Layer ◽  
Two Dimensional ◽  
Interface Engineering ◽  
Phase Purity ◽  
High Phase Purity ◽  
High Phase

Interface engineering using a perovskite derivative phase for efficient and stable CsPbBr3 solar cells

2018 ◽  
Vol 6 (29) ◽  
pp. 14255-14261 ◽  
Author(s):  
Huan Li ◽  
Guoqing Tong ◽  
Taotao Chen ◽  
Hanwen Zhu ◽  
Guopeng Li ◽  
...  
Keyword(s):  
Solar Cells ◽  
Electron Transport ◽  
Energy Barrier ◽  
Perovskite Solar Cells ◽  
Hole Transport ◽  
Transport Layer ◽  
Electron Transport Layer ◽  
Hole Transport Layer ◽  
Interface Engineering ◽  
Interface Defects

A derivative-phase CsPb2Br5 is introduced into inorganic perovskite solar cells, which will effectively eliminate interface defects, lower the energy barrier of electron transport layer and suppress the recombination at the interface of hole transport layer in the devices.

scholarly journals Two-Dimensional Hybrid Composites of SnS2 Nanosheets Array Film with Graphene for Enhanced Photoelectric Performance

Nanomaterials ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 1122
Author(s):  
Feier Fang ◽  
Henan Li ◽  
Huizhen Yao ◽  
Ke Jiang ◽  
Zexiang Liu ◽  
...  
Keyword(s):  
Hybrid Composites ◽  
Layer Structure ◽  
Graphene Film ◽  
Hole Transport ◽  
Transport Layer ◽  
Hole Transport Layer ◽  
Two Dimensional ◽  
Strong Light ◽  
Preparation Conditions ◽  
Metal Dichalcogenides

Two-dimensional (2D) metal dichalcogenides have attracted considerable attention for use in photoelectric devices due to their unique layer structure and strong light-matter interaction. In this paper, vertically grown SnS2 nanosheets array film was synthesized by a facile chemical bath deposition (CBD). The effects of deposition time and annealing temperature on the quality of SnS2 films was investigated in detail. By optimizing the preparation conditions, the SnS2 array film exhibited efficient photoelectric detection performance under sunlight. Furthermore, in order to improve the performance of the photodetector based on SnS2 nanosheets film, a transparent graphene film was introduced as the hole-transport layer by wet-chemical method directly transferring techniques. Graphene/SnS2 nanosheets array film heterojunction photodetectors exhibit enhanced photoresponsivity. The light on/off ratio of the photodetector based on graphene/SnS2 was 1.53, about 1.4 times higher than that of the pristine SnS2 array films. The improved photoresponse performance suggested that the effective heterojunction between vertical SnS2 nanosheets array film and graphene suppresses the recombination of photogenerated carriers. The results indicate that the graphene/SnS2 heterojunction photodetectors have great potential in photodetection devices.

Hybrid CdSe/CsPbI3 quantum dots for interface engineering in perovskite solar cells

2020 ◽  
Vol 4 (4) ◽  
pp. 1837-1843 ◽  
Author(s):  
Jing Ge ◽  
Weixin Li ◽  
Xuan He ◽  
Hui Chen ◽  
Wei Fang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Hole Transport ◽  
Transport Layer ◽  
Hole Transport Layer ◽  
Interface Engineering

Hybrid CdSe/CsPbI3 quantum dots (QDs) are selected for incorporation between the perovskite film and the hole transport layer (HTL).

scholarly journals Improving stability of organometallic-halide perovskite solar cells using exfoliation two-dimensional molybdenum chalcogenides

2020 ◽  
Vol 4 (1) ◽  
Author(s):  
Meiying Liang ◽  
Adnan Ali ◽  
Abdelhak Belaidi ◽  
Mohammad Istiaque Hossain ◽  
Oskar Ronan ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Buffer Layer ◽  
Perovskite Solar Cells ◽  
Hole Transport ◽  
Transport Layer ◽  
Hole Transport Layer ◽  
Two Dimensional ◽  
Halide Perovskite ◽  
The Stability

Abstract Organometallic-halide perovskite solar cells (PSCs) are emerging as the most promising next generation solar cell devices. However, the stability is still the main bottleneck of their further development. Here, we introduce two-dimensional (2D) molybdenum chalcogenides (MoS2 and MoSe2) (MCs) nanoflakes as a buffer layer between perovskite layer and hole transport layer (HTL) to improve the stability of the organometallic-halide PSCs. 2D MCs are obtained via liquid-phase exfoliated (LPE) approach, and Glass/FTO/compact-TiO2/ mesoporous-TiO2/FA85MA15PbI85Br15/2D MCs/Spiro-OMeTAD/Au structured solar cell devices are designed and fabricated. In this system, 2D MCs act both as a protective layer and an additional HTL of PSCs. This kind of PSCs achieve a relatively high-power conversion efficiency (PCE) of 14.9%, along with a much longer lifetime stability compared to the standard PSCs. After 1 h, PCE of the PSC adding a 2D MCs buffer layer could maintain 93.1% of initial value, while the PCE of the standard PSC dropped dramatically to 78.2% of initial efficiency. Our results pave the way towards the implementation of 2D MCs nanoflakes as a material able to boost the shelf life of PSCs and further provide the opportunity to fabricate large-area PSCs in view of their commercialization.

Au nanoparticles on ultrathin MoS2sheets for plasmonic organic solar cells

2014 ◽  
Vol 2 (36) ◽  
pp. 14798-14806 ◽  
Author(s):  
Xi Yang ◽  
Wenqing Liu ◽  
Min Xiong ◽  
Yingying Zhang ◽  
Tao Liang ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Solar Cells ◽  
Molybdenum Disulfide ◽  
Organic Solar Cells ◽  
Au Nanoparticles ◽  
Hole Transport ◽  
Transport Layer ◽  
Hole Transport Layer ◽  
Two Dimensional ◽  
20 Nm

A novel hole transport layer (HTL) composed of ultrathin two-dimensional, molybdenum disulfide (MoS2) sheets decorated with 20 nm gold nanoparticles (NPs) (MoS2@Au) was developed to make use of plasmonics for organic solar cells (OSCs).

Enhancing the efficiency and stability of perovskite solar cells based on moisture-resistant dopant free hole transport materials by using 2D-BA2PbI4 interfacial layer

2021 ◽  
Author(s):  
Farzaneh S. Ghoreishi ◽  
Vahid Ahmadi ◽  
Maryam Alidaei ◽  
Farzaneh Arabpour Roghabadi ◽  
Mahmoud Samadpour ◽  
...  
Keyword(s):  
Solar Cells ◽  
Interfacial Layer ◽  
Photovoltaic Performance ◽  
Perovskite Solar Cells ◽  
Hole Transport ◽  
Transport Layer ◽  
Hole Transport Layer ◽  
Two Dimensional ◽  
Free Hole ◽  
Moisture Resistant

Herein, the photovoltaic performance and stability of perovskite solar cells (PSCs) based on the dopant-free hole transport layer (HTL) is efficiently improved by inserting a two-dimensional (2D) interfacial layer. The...

Efficient quasi-two dimensional perovskite light-emitting diodes using a cage-type additive

2020 ◽  
Vol 8 (29) ◽  
pp. 9845-9853
Author(s):  
Run Wang ◽  
Yue Zhang ◽  
Xing-Juan Ma ◽  
Yan-Hong Deng ◽  
Jun-Wei Shi ◽  
...  
Keyword(s):  
Current Efficiency ◽  
High Performance ◽  
Light Emitting Diodes ◽  
Hole Transport ◽  
Type Structure ◽  
Transport Layer ◽  
Hole Transport Layer ◽  
Two Dimensional ◽  
Light Emitting ◽  
Maximum Current

High performance quasi-2D PeLEDs with maximum current efficiency of 35.5 cd A−1, by introducing α-cyclodextrin (α-CD) with a cage-type structure as an additive and TFB/PVK bilayer as a hole transport layer, are demonstrated.

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