scholarly journals Low-Temperature Processed TiOx/Zn1−xCdxS Nanocomposite for Efficient MAPbIxCl1−x Perovskite and PCDTBT:PC70BM Polymer Solar Cells

Polymers ◽  
2019 ◽  
Vol 11 (6) ◽  
pp. 980 ◽  
Author(s):  
Binh Duong ◽  
Khathawut Lohawet ◽  
Tanyakorn Muangnapoh ◽  
Hideki Nakajima ◽  
Narong Chanlek ◽  
...  

The majority of high-performance perovskite and polymer solar cells consist of a TiO2 electron transport layer (ETL) processed at a high temperature (>450 °C). Here, we demonstrate that low-temperature (80 °C) ETL thin film of TiOx:Zn1−xCdxS can be used as an effective ETL and its band energy can be tuned by varying the TiOx:Zn1−xCdxS ratio. At the optimal ratio of 50:50 (vol%), the MAPbIxCl1−x perovskite and PCBTBT:PC70BM polymer solar cells achieved 9.79% and 4.95%, respectively. Morphological and optoelectronic analyses showed that tailoring band edges and homogeneous distribution of the local surface charges could improve the solar cells efficiency by more than 2%. We proposed a plausible mechanism to rationalize the variation in morphology and band energy of the ETL.


2020 ◽  
Vol 8 (10) ◽  
pp. 5308-5314 ◽  
Author(s):  
Xia Yang ◽  
Hanjun Yang ◽  
Xiaotian Hu ◽  
Wenting Li ◽  
Zhimin Fang ◽  
...  

High-efficiency flexible CsPbI2Br PSCs are designed by introducing Al-doped ZnO as an electron-transport layer and tert-butyl cyanoacetate as a hole passivation layer. The optimized PSC exhibits outstanding stability and a champion PCE of 15.08%.



2020 ◽  
Author(s):  
Miao Yu ◽  
Haoxuan Sun ◽  
Xiaona Huang ◽  
Yichao Yan ◽  
Wanli Zhang

Abstract Recently, reported perovskite solar cells (PSCs) with high power conversion efficiency (PCE) are mostly based on mesoporous structures containing mesoporous titanium oxide (TiO 2 ) which is the main factor to reduce the overall hysteresis. However, existing fabrication approaches for mesoporous TiO 2 generally require a high temperature (>450 °C) annealing process. Moreover, there is still plenty of scope for improvement in terms of increasing the electron conductivity and reducing the carrier recombination. Herein, a facile one-step, in situ and low-temperature method was developed to prepare an Nb:TiO 2 compact-mesoporous layer to serve as both a scaffold and an electron transport layer (ETL) in PSCs. The Nb:TiO 2 compact-mesoporous layer based PSCs exhibit suppressed hysteresis, which is attributed to the synergistic effect of the large interface surface area caused by nano-pin morphology on the surface and the improved carrier transportation caused by the presence of Nb. Such a high-quality compact-mesoporous layer allows the PSC achieve a remarkable PCE of 19.74%. This work promises an effective approach for creating hysteresis-less and high-efficiency PSCs based on compact-mesoporous structures with lower energy consumption and cost.



RSC Advances ◽  
2018 ◽  
Vol 8 (24) ◽  
pp. 13094-13102 ◽  
Author(s):  
José G. Sánchez ◽  
Víctor S. Balderrama ◽  
Salvador I. Garduño ◽  
Edith Osorio ◽  
Aurelien Viterisi ◽  
...  

In this paper, we demonstrate that zinc oxide (ZnO) layers deposited by inkjet printing (IJP) can be successfully applied to the low-temperature fabrication of efficient inverted polymer solar cells (i-PSCs).





2011 ◽  
Vol 23 (14) ◽  
pp. 1679-1683 ◽  
Author(s):  
Yanming Sun ◽  
Jung Hwa Seo ◽  
Christopher J. Takacs ◽  
Jason Seifter ◽  
Alan J. Heeger


RSC Advances ◽  
2017 ◽  
Vol 7 (32) ◽  
pp. 19457-19463 ◽  
Author(s):  
Guoqing Tong ◽  
Zihang Song ◽  
Chengdong Li ◽  
Yaolong Zhao ◽  
Linwei Yu ◽  
...  

Hybrid perovskite solar cells (PSCs) are promising candidates in exploring high performance flexible photovoltaics, where a low-temperature-processed metal oxide electron transfer layer (ETL) is highly preferable.





2018 ◽  
Vol 28 (13) ◽  
pp. 1705847 ◽  
Author(s):  
Jingwen Zhang ◽  
Rongming Xue ◽  
Guiying Xu ◽  
Weijie Chen ◽  
Guo-Qing Bian ◽  
...  


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