Fabrication of fully non-vacuum processed perovskite solar cells using an inorganic CuSCN hole-transporting material and carbon-back contact

2018 ◽  
Vol 2 (12) ◽  
pp. 2778-2787 ◽  
Author(s):  
Ajay K. Baranwal ◽  
Hiroyuki Kanda ◽  
Naoyuki Shibayama ◽  
Seigo Ito
Keyword(s):  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Back Contact ◽  
Perovskite Layer ◽  
Hole Transporting ◽  
Hole Transporting Material

CuSCN and carbon pastes were printed on perovskite layer.

scholarly journals Powder Pressed Cuprous Iodide (CuI) as A Hole Transporting Material for Perovskite Solar Cells

Materials ◽  
2019 ◽  
Vol 12 (13) ◽  
pp. 2037 ◽  
Author(s):  
Siva Uthayaraj ◽  
D. Karunarathne ◽  
G. Kumara ◽  
Thanihaichelvan Murugathas ◽  
Shivatharsiny Rasalingam ◽  
...  
Keyword(s):  
Solar Cells ◽  
Short Circuit ◽  
Perovskite Solar Cells ◽  
Powder Layer ◽  
Perovskite Layer ◽  
Pressing Method ◽  
Air Mass ◽  
Hole Transporting ◽  
Top Contact ◽  
Hole Transporting Material

This study focuses on employing cuprous iodide (CuI) as a hole-transporting material (HTM) in fabricating highly efficient perovskite solar cells (PSCs). The PSCs were made in air with either CuI or 2,2′,7,7′-Tetrakis[N,N-di(4-methoxyphenyl)amino]-9,9′-spirobifluorene (spiro-OMeTAD) as HTMs. A simple and novel pressing method was employed for incorporating CuI powder layer between perovskite layer and Pt top-contact to fabricate devices with CuI, while spiro-OMeTAD was spin-coated between perovskite layer and thermally evaporated Au top-contact to fabricate devices with spiro-OMeTAD. Under illuminations of 100 mW/cm2 with an air mass (AM) 1.5 filter in air, the average short-circuit current density (JSC) of the CuI devices was over 24 mA/cm2, which is marginally higher than that of spiro-OMeTAD devices. Higher JSC of the CuI devices can be attributed to high hole-mobility of CuI that minimizes the electron-hole recombination. However, the average power conversion efficiency (PCE) of the CuI devices were lower than that of spiro-OMeTAD devices due to slightly lower open-circuit voltage (VOC) and fill factor (FF). This is probably due to surface roughness of CuI powder. However, optimized devices with solvent-free powder pressed CuI as HTM show a promising efficiency of over 8.0 % under illuminations of 1 sun (100 mW/cm2) with an air mass 1.5 filter in air, which is the highest among the reported efficiency values for PSCs fabricated in an open environment with CuI as HTM.

Enhanced charge collection with ultrathin AlOxelectron blocking layer for hole-transporting material-free perovskite solar cell

2015 ◽  
Vol 17 (7) ◽  
pp. 4937-4944 ◽  
Author(s):  
Huiyun Wei ◽  
Jiangjian Shi ◽  
Xin Xu ◽  
Junyan Xiao ◽  
Jianheng Luo ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Perovskite Solar Cells ◽  
Perovskite Solar Cell ◽  
Charge Collection ◽  
Blocking Layer ◽  
Back Contact ◽  
Hole Transporting ◽  
Hole Transporting Material

A MIS back contact was constructed by introducing an ultrathin AlOxlayer to improve the performance of HTM-free perovskite solar cells.

Imidazole core to construct dopant-free asymmetric hole-transporting material for efficient inverted perovskite solar cells

2021 ◽  
Author(s):  
Yang Cheng ◽  
Quanping Wu ◽  
Ming Luo ◽  
Haolin Wang ◽  
Song Xue ◽  
...  
Keyword(s):  
Solar Cells ◽  
Direct Contact ◽  
Bottom Electrode ◽  
Perovskite Solar Cells ◽  
Perovskite Layer ◽  
Hole Transporting ◽  
Hole Transporting Material ◽  
Hole Transporting Materials

As the sandwiched hole transporting materials (HTMs) layers are in direct contact with up-coated perovskite layer and bottom electrode in p-i-n structured perovskite (i-PSCs), the film quality of HTMs determines...

scholarly journals Ultrahydrophobic 3D/2D fluoroarene bilayer-based water-resistant perovskite solar cells with efficiencies exceeding 22%

2019 ◽  
Vol 5 (6) ◽  
pp. eaaw2543 ◽  
Author(s):  
Yuhang Liu ◽  
Seckin Akin ◽  
Linfeng Pan ◽  
Ryusuke Uchida ◽  
Neha Arora ◽  
...  
Keyword(s):  
Solar Cells ◽  
Light Harvesting ◽  
Perovskite Solar Cells ◽  
Humid Air ◽  
Perovskite Layer ◽  
New Approach ◽  
Carrier Recombination ◽  
Spacer Layer ◽  
Hole Transporting ◽  
Hole Transporting Material

Preventing the degradation of metal perovskite solar cells (PSCs) by humid air poses a substantial challenge for their future deployment. We introduce here a two-dimensional (2D) A2PbI4 perovskite layer using pentafluorophenylethylammonium (FEA) as a fluoroarene cation inserted between the 3D light-harvesting perovskite film and the hole-transporting material (HTM). The perfluorinated benzene moiety confers an ultrahydrophobic character to the spacer layer, protecting the perovskite light-harvesting material from ambient moisture while mitigating ionic diffusion in the device. Unsealed 3D/2D PSCs retain 90% of their efficiency during photovoltaic operation for 1000 hours in humid air under simulated sunlight. Remarkably, the 2D layer also enhances interfacial hole extraction, suppressing nonradiative carrier recombination and enabling a power conversion efficiency (PCE) >22%, the highest reported for 3D/2D architectures. Our new approach provides water- and heat-resistant operationally stable PSCs with a record-level PCE.

Star-shaped cyclopentadithiophene-based dopant-free hole-transporting material for high-performance perovskite solar cells

2021 ◽  
Author(s):  
Kun-Mu Lee ◽  
Jui-Yu Yang ◽  
Ping-Sheng Lai ◽  
Ke-Jyun Luo ◽  
Ting Yu Yang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
High Performance ◽  
Perovskite Solar Cells ◽  
Free Hole ◽  
Hole Transporting ◽  
Hole Transporting Material

A new cyclopentadithiophene (CPDT)-based organic small molecule serves as an efficient dopant-free hole transporting material (HTM) for perovskite solar cells (PSCs). Upon incorporation of two carbazole groups, the resulting CPDT-based...

A low-cost asymmetric carbazole-based hole-transporting material for efficient perovskite solar cells

2021 ◽  
Author(s):  
Xueqiao Li ◽  
Na Sun ◽  
Zhanfeng Li ◽  
Jinbo Chen ◽  
Qinjun Sun ◽  
...  
Keyword(s):  
Solar Cells ◽  
State Of The Art ◽  
Low Cost ◽  
Perovskite Solar Cells ◽  
The State ◽  
Hole Transporting ◽  
Hole Transporting Material

Perovskite solar cells (PSCs) have reached their highest efficiency with the state-of-the-art hole-transporting material (HTM) spiro-OMeTAD.

A gradient engineered hole-transporting material for monolithic series-type large-area perovskite solar cells

2017 ◽  
Vol 5 (40) ◽  
pp. 21161-21168 ◽  
Author(s):  
Yongguang Tu ◽  
Jihuai Wu ◽  
Xin He ◽  
Panfeng Guo ◽  
Tongyue Wu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Efficiency Enhancement ◽  
Large Area ◽  
Active Layers ◽  
Hole Transporting ◽  
Series Type ◽  
Hole Transporting Material

Further efficiency enhancement mainly relies on decreasing the interface losses between the active layers in perovskite solar cells.

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