Single phase, high hole mobility Cu2O films as an efficient and robust hole transporting layer for organic solar cells

2017 ◽  
Vol 5 (22) ◽  
pp. 11055-11062 ◽  
Author(s):  
Yaxiong Guo ◽  
Hongwei Lei ◽  
Liangbin Xiong ◽  
Borui Li ◽  
Zhao Chen ◽  
...  

We show that high mobility p-type near-stoichiometric cuprous films (Cu2O) can be prepared by reactive magnetron sputtering. The highest power conversion efficiency of the OSCs based on PTB7:PC71BM system reaches 8.61%.

RSC Advances ◽  
2018 ◽  
Vol 8 (30) ◽  
pp. 16887-16896 ◽  
Author(s):  
Xin Dai ◽  
Hongwei Lei ◽  
Cong Chen ◽  
Yaxiong Guo ◽  
Guojia Fang

Inorganic p-type films with high mobility are very important for opto-electronic applications.


2014 ◽  
Vol 2 (30) ◽  
pp. 11857-11865 ◽  
Author(s):  
Masamichi Ikai ◽  
Yoshifumi Maegawa ◽  
Yasutomo Goto ◽  
Takao Tani ◽  
Shinji Inagaki

Mesoporous films containing 4,7-dithienyl-2,1,3-benzothiadiazole units in the frameworks were synthesized and demonstrated to function as a p-type layer for organic solar cells by filling an n-type PCBM in the mesopores.


2012 ◽  
Vol 520 (7) ◽  
pp. 3118-3124 ◽  
Author(s):  
Pingli Qin ◽  
Guojia Fang ◽  
Nanhai Sun ◽  
Xi Fan ◽  
Qiao Zheng ◽  
...  

Author(s):  
Yung-Chung Chen ◽  
Ding-Zhi Lin ◽  
Jhong-Ci Wang ◽  
Jen-Shyang Ni ◽  
Yang-Yen Yu ◽  
...  

Three p-type small molecules (CL-1–3) based on tetraphenylethylene as the core and different π-conjugation diarylamines as linkers are synthesized. The bilayer HTL of the NiOx/CL-3-based cell exhibits the best power conversion efficiency of 20.15%.


Materials ◽  
2020 ◽  
Vol 13 (10) ◽  
pp. 2376 ◽  
Author(s):  
Song-Sheng Lin ◽  
Qian Shi ◽  
Ming-Jiang Dai ◽  
Kun-Lun Wang ◽  
Sheng-Chi Chen ◽  
...  

CuCrO2 is one of the most promising p-type transparent conductive oxide (TCO) materials. Its electrical properties can be considerably improved by Mg doping. In this work, Cr-deficient CuCrO2 thin films were deposited by reactive magnetron sputtering based on 5 at.% Mg doping. The influence of Cr deficiency on the film’s optoelectronic properties was investigated. As the film’s composition varied, CuO impurity phases appeared in the film. The mixed valency of Cu+/Cu2+ led to an enhancement of the hybridization between the Cu3d and O2p orbitals, which further reduced the localization of the holes by oxygen. As a result, the carrier concentration significantly improved. However, since the impurity phase of CuO introduced more grain boundaries in Cu[Cr0.95−xMg0.05]O2, impeding the transport of the carrier and incident light in the film, the carrier mobility and the film’s transmittance reduced accordingly. In this work, the optimal optoelectronic performance is realized where the film’s composition is Cu[Cr0.78Mg0.05]O2. Its Haacke’s figure of merit is about 1.23 × 10−7 Ω−1.


2018 ◽  
Vol 54 (2) ◽  
pp. 1434-1442 ◽  
Author(s):  
M. A. Gharavi ◽  
G. Greczynski ◽  
F. Eriksson ◽  
J. Lu ◽  
B. Balke ◽  
...  

2018 ◽  
Vol 24 (8) ◽  
pp. 5866-5871 ◽  
Author(s):  
G Balakrishnan ◽  
J. S. Ram Vinoba ◽  
R Rishaban ◽  
S Nathiya ◽  
O. S. Nirmal Ghosh

Nickel oxide (NiO) thin films were deposited on glass substrates using the RF magnetron sputtering technique at room temperature. The Argon and oxygen flow rates were kept constant at 10 sccm and 5 sccm respectively. The films were annealed at various temperatures (RT-300 °C) and its influence on the microstructural, optical and electrical properties were investigated. The X-ray diffraction (XRD) investigation of NiO films indicated the polycrystallinity of the films with the (111), (200) and (220) reflections corresponding to the cubic structure of NiO films. The crystallite size of NiO films was in the range ~4–14 nm. The transmittance of the films increased from 20 to 75% with increasing annealed temperature. The optical band gap of the films was 3.6–3.75 eV range for the as-deposited and annealed films. The Hall effect studies indicated the p-type conductivity of films and the film annealed at 300 °C showed higher carrier concentration (N), high conductivity (σ) and high mobility (μ) compared to other films. These NiO films can be used as a P-type semiconductor material in the devices require transparent conducting films.


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