scholarly journals Nanoparticulate Metal Oxide Top Electrode Interface Modification Improves the Thermal Stability of Inverted Perovskite Photovoltaics

Nanomaterials ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 1616 ◽  
Author(s):  
Ioannis T. Papadas ◽  
Fedros Galatopoulos ◽  
Gerasimos S. Armatas ◽  
Nir Tessler ◽  
Stelios A. Choulis

Solution processed γ-Fe2O3 nanoparticles via the solvothermal colloidal synthesis in conjunction with ligand-exchange method are used for interface modification of the top electrode in inverted perovskite solar cells. In comparison to more conventional top electrodes such as PC(70)BM/Al and PC(70)BM/AZO/Al, we show that incorporation of a γ-Fe2O3 provides an alternative solution processed top electrode (PC(70)BM/γ-Fe2O3/Al) that not only results in comparable power conversion efficiencies but also improved thermal stability of inverted perovskite photovoltaics. The origin of improved stability of inverted perovskite solar cells incorporating PC(70)BM/ γ-Fe2O3/Al under accelerated heat lifetime conditions is attributed to the acidic surface nature of γ-Fe2O3 and reduced charge trapped density within PC(70)BM/ γ-Fe2O3/Al top electrode interfaces.

RSC Advances ◽  
2020 ◽  
Vol 10 (31) ◽  
pp. 18400-18406
Author(s):  
Xueqing Zheng ◽  
Tingming Jiang ◽  
Lizhong Bai ◽  
Xu Chen ◽  
Zeng Chen ◽  
...  

The thermal stability of PSCs has been enhanced synergistically by removing BCP, increasing C60 thickness and iconic liquid addition.


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.


2019 ◽  
Vol 318 ◽  
pp. 384-391 ◽  
Author(s):  
Jiankai Zhang ◽  
Wujian Mao ◽  
Jiaji Duan ◽  
Sumei Huang ◽  
Zhejuan Zhang ◽  
...  

2019 ◽  
Vol 6 (1) ◽  
pp. 1970004
Author(s):  
Chuanjiang Qin ◽  
Toshinori Matsushima ◽  
Dino Klotz ◽  
Takashi Fujihara ◽  
Chihaya Adachi

ChemSusChem ◽  
2016 ◽  
Vol 9 (18) ◽  
pp. 2592-2596 ◽  
Author(s):  
Minsu Jung ◽  
Young Chan Kim ◽  
Nam Joong Jeon ◽  
Woon Seok Yang ◽  
Jangwon Seo ◽  
...  

Solar RRL ◽  
2019 ◽  
Vol 3 (11) ◽  
pp. 1900346 ◽  
Author(s):  
Weitao Chen ◽  
Shasha Zhang ◽  
Zhenghao Liu ◽  
Shaohang Wu ◽  
Rui Chen ◽  
...  

2020 ◽  
Vol 4 (12) ◽  
pp. 3616-3622
Author(s):  
Hidenori Nakayama ◽  
Julia A. Schneider ◽  
Mina Faust ◽  
Hengbin Wang ◽  
Javier Read de Alaniz ◽  
...  

A new family of n-type dopants for organic semiconductors is reported. Changing the alkyl chain of these triazabicyclodecene (TBD) dopants alters their physical properties, including thermal stability, and influences their doping efficiency.


Author(s):  
Wenya Song ◽  
Lucija Rakocevic ◽  
Raghavendran Thiruvallur Eachambadi ◽  
Weiming Qiu ◽  
João P. Bastos ◽  
...  

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