Full Device Exposure Laser Thermal Annealing: High performance and high yield junction formation process

Author(s):  
K. Huet ◽  
C. Boniface ◽  
R. Negru ◽  
P. Aing ◽  
J. Venturini
2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Jeongpil Kim ◽  
Jeong-Hyun Eum ◽  
Junhyeok Kang ◽  
Ohchan Kwon ◽  
Hansung Kim ◽  
...  

AbstractHerein, we introduce a simple method to prepare hierarchical graphene with a tunable pore structure by activating graphene oxide (GO) with a two-step thermal annealing process. First, GO was treated at 600 °C by rapid thermal annealing in air, followed by subsequent thermal annealing in N2. The prepared graphene powder comprised abundant slit nanopores and micropores, showing a large specific surface area of 653.2 m2/g with a microporous surface area of 367.2 m2/g under optimized conditions. The pore structure was easily tunable by controlling the oxidation degree of GO and by the second annealing process. When the graphene powder was used as the supercapacitor electrode, a specific capacitance of 372.1 F/g was achieved at 0.5 A/g in 1 M H2SO4 electrolyte, which is a significantly enhanced value compared to that obtained using activated carbon and commercial reduced GO. The performance of the supercapacitor was highly stable, showing 103.8% retention of specific capacitance after 10,000 cycles at 10 A/g. The influence of pore structure on the supercapacitor performance was systematically investigated by varying the ratio of micro- and external surface areas of graphene.


2021 ◽  
Vol 7 (10) ◽  
pp. eabe8130
Author(s):  
Shangshang Chen ◽  
Xun Xiao ◽  
Hangyu Gu ◽  
Jinsong Huang

Perovskite-based electronic materials and devices such as perovskite solar cells (PSCs) have notoriously bad reproducibility, which greatly impedes both fundamental understanding of their intrinsic properties and real-world applications. Here, we report that organic iodide perovskite precursors can be oxidized to I2 even for carefully sealed precursor powders or solutions, which markedly deteriorates the performance and reproducibility of PSCs. Adding benzylhydrazine hydrochloride (BHC) as a reductant into degraded precursor solutions can effectively reduce the detrimental I2 back to I−, accompanied by a substantial reduction of I3−-induced charge traps in the films. BHC residuals in perovskite films further stabilize the PSCs under operation conditions. BHC improves the stabilized efficiency of the blade-coated p-i-n structure PSCs to a record value of 23.2% (22.62 ± 0.40% certified by National Renewable Energy Laboratory), and the high-efficiency devices have a very high yield. A stabilized aperture efficiency of 18.2% is also achieved on a 35.8-cm2 mini-module.


2021 ◽  
Author(s):  
Benjamin Schmuck ◽  
Gabriele Greco ◽  
Andreas Barth ◽  
Nicola M. Pugno ◽  
Jan Johansson ◽  
...  

2014 ◽  
Vol 2 (13) ◽  
pp. 4706-4713 ◽  
Author(s):  
Xue-Feng Lu ◽  
Dong-Jun Wu ◽  
Run-Zhi Li ◽  
Qi Li ◽  
Sheng-Hua Ye ◽  
...  

Novel NiCo2O4 NSs@HNRAs are fabricated via a simple and environmental friendly template-assisted electrodeposition followed by thermal annealing and they exhibit predominant electrochemical properties and long-term cycle stability.


1998 ◽  
Vol 37 (Part 1, No. 3B) ◽  
pp. 1054-1058 ◽  
Author(s):  
Yukio Nishida ◽  
Hirokazu Sayama ◽  
Satoshi Shimizu ◽  
Takashi Kuroi ◽  
Akihiko Furukawa ◽  
...  

Small ◽  
2016 ◽  
Vol 12 (39) ◽  
pp. 5442-5448 ◽  
Author(s):  
Fengqin Huang ◽  
Guanshui Ma ◽  
Juzhe Liu ◽  
Jie Lin ◽  
Xiaotian Wang ◽  
...  
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