Improving the stabilities of organic solar cells via employing a mixed cathode buffer layer

2021 ◽  
Vol 95 (3) ◽  
pp. 30201
Author(s):  
Xi Guan ◽  
Yufei Wang ◽  
Shang Feng ◽  
Jidong Zhang ◽  
Qingqing Yang ◽  
...  

Organic solar cells (OSCs) have been fabricated using cathode buffer layers based on bathocuproine (BCP) and 4,4'-N,N'-dicarbazole-biphenyl (CBP). It is found that despite nearly same power conversion efficiencies, the bilayer of BCP/CBP shows increased thermal stability of device than the monolayer of BCP, mostly because upper CBP thin film stabilizes under BCP thin film. The mixed layer of BCP:CBP gives slightly decreased efficiency than BCP and BCP/CBP, mostly because the electron mobility of the OSC using BCP:CBP is decreased than those using BCP and BCP/CBP. However, the BCP:CBP increases thermal stability of device than BCP and BCP/CBP, ascribed to that the BCP and CBP effectively inhibit reciprocal tendencies of crystallizations in the mixed layer. Moreover, the BCP:CBP improves the light stability of device than the BCP and BCP/CBP, because the energy transfer from BCP to CBP in in the mixed layer effectively decelerates the photodegradation of BCP. We provide a facial method to improve the stabilities of cathode buffer layers against heat and light, beneficial to the commercial development of OSCs.

2021 ◽  
Vol 118 (2) ◽  
pp. 023302
Author(s):  
Jaehoon Kim ◽  
Yeonkyung Lee ◽  
Jun Young Kim ◽  
Hyung-Jun Song ◽  
Jiyun Song ◽  
...  

2014 ◽  
Vol 15 (3) ◽  
pp. 680-684 ◽  
Author(s):  
Ming Liang Jin ◽  
Jong Kil Choi ◽  
Dae Woo Kim ◽  
Jong-Min Park ◽  
Cheng Jin An ◽  
...  

Nanoscale ◽  
2018 ◽  
Vol 10 (41) ◽  
pp. 19524-19535 ◽  
Author(s):  
Zhiyong Liu ◽  
Ning Wang

In this work, organic solar cells (OSCs) were fabricated with a blend of PC71BM and p-DTS-(FBTTh2)2 employed as a binary photoactive layer and with a dihydronaphthyl-based C60 bisadduct (NCBA) small-molecule acceptor used as a third component material.


2015 ◽  
Vol 141 ◽  
pp. 240-247 ◽  
Author(s):  
Marta Tessarolo ◽  
Antonio Guerrero ◽  
Desta Gedefaw ◽  
Margherita Bolognesi ◽  
Mario Prosa ◽  
...  

2017 ◽  
Vol 5 (33) ◽  
pp. 17517-17524 ◽  
Author(s):  
Aiman Rahmanudin ◽  
Xavier A. Jeanbourquin ◽  
Simon Hänni ◽  
Arvindh Sekar ◽  
Emilie Ripaud ◽  
...  

Strategies for enhancing the thermal stability of small-molecule organic solar cells are demonstrated and compared with two molecularly engineered additives.


2011 ◽  
Vol 685 ◽  
pp. 147-151 ◽  
Author(s):  
Jin Hua Huang ◽  
Rui Qin Tan ◽  
Jia Li ◽  
Yu Long Zhang ◽  
Ye Yang ◽  
...  

Transparent conductive oxides are key electrode materials for thin film solar cells. Aluminum doped zinc oxide has become one of the most promising transparent conductive oxide (TCO) materials because of its excellent optical and electrical properties. In this work, aluminum doped zinc oxide thin films were prepared using RF magnetron sputtering of a 4 at% ceramic target. The thermal stability of aluminum doped zinc oxide thin films was studied using various physical and structural characterization methods. It was observed that the electrical conductivity of aluminum doped zinc oxide thin films deteriorated rapidly and unevenly when it was heated up to 350 °C. When the aluminum doped zinc oxide thin films were exposed to UV ozone for a short time before heating up, its thermal stability and large area homogeneity were significantly improved. The present work provided a novel method for improving the durability of aluminum doped zinc oxides as transparent conductive electrodes in thin film solar cells.


2013 ◽  
Vol 4 (15) ◽  
pp. 4145 ◽  
Author(s):  
Sokha Khiev ◽  
Lionel Derue ◽  
Getachew Ayenew ◽  
Hussein Medlej ◽  
Ross Brown ◽  
...  

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