TY - JOUR
T1 - Microfluidic electrogenerated chemiluminescence cells using aluminum-doped zinc oxide nanoparticles as an electron injection layer
AU - Okada, Koji
AU - Ishimatsu, Ryoichi
AU - Mizuno, Jun
AU - Kasahara, Takashi
N1 - Funding Information:
The authors would like to acknowledge Prof. Tomoaki Nishimura (Hosei University) and Ms. Aya Okubo (Hosei University) for fruitful discussions. This research was partially supported by the Japan Society for the Promotion of Science (JSPS) KAKENHI Grant Number JP21K14170 and Toshiba Electronic Devices & Storage Corporation (Japan).
Funding Information:
The authors would like to acknowledge Prof. Tomoaki Nishimura (Hosei University) and Ms. Aya Okubo (Hosei University) for fruitful discussions. This research was partially supported by the Japan Society for the Promotion of Science (JSPS) KAKENHI Grant Number JP21K14170 and Toshiba Electronic Devices & Storage Corporation (Japan).
Publisher Copyright:
© 2021 Elsevier B.V.
PY - 2022/2/1
Y1 - 2022/2/1
N2 - We demonstrated highly luminescent microfluidic electrogenerated chemiluminescence (ECL) cells using aluminum-doped zinc oxide nanoparticles (AZO NPs) as an electron injection layer (EIL). The 5-μm-thick electro-microfluidic device, in which an approximately 1.6-μm-thick AZO NPs layer was embedded, was fabricated by microelectromechanical systems processes and a vacuum ultraviolet-assisted direct bonding technique. A tris(2,2′-bipyridine)ruthenium(II) solution was used as an orange-red emitter. A luminance and a half-lifetime were measured to be 161 cd/m2 at 3.3 V and 30 s at 3.0 V, respectively, which were 2.5 times higher and 4.3 times longer than those of the device without EIL. We also compared the EIL performance of the AZO NPs with that of titanium dioxide NPs. Furthermore, 2-μm-thick microfluidic ECL cell with the AZO NPs layer was fabricated by the same process, and the maximum luminance increased up to 240 cd/m2. We expect that the developed microfluidic device will be highly attractive for solution-based display applications.
AB - We demonstrated highly luminescent microfluidic electrogenerated chemiluminescence (ECL) cells using aluminum-doped zinc oxide nanoparticles (AZO NPs) as an electron injection layer (EIL). The 5-μm-thick electro-microfluidic device, in which an approximately 1.6-μm-thick AZO NPs layer was embedded, was fabricated by microelectromechanical systems processes and a vacuum ultraviolet-assisted direct bonding technique. A tris(2,2′-bipyridine)ruthenium(II) solution was used as an orange-red emitter. A luminance and a half-lifetime were measured to be 161 cd/m2 at 3.3 V and 30 s at 3.0 V, respectively, which were 2.5 times higher and 4.3 times longer than those of the device without EIL. We also compared the EIL performance of the AZO NPs with that of titanium dioxide NPs. Furthermore, 2-μm-thick microfluidic ECL cell with the AZO NPs layer was fabricated by the same process, and the maximum luminance increased up to 240 cd/m2. We expect that the developed microfluidic device will be highly attractive for solution-based display applications.
KW - Aluminum-doped zinc oxide nanoparticles
KW - Electrogenerated chemiluminescence
KW - Electron injection layer
KW - Microfluidic
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U2 - 10.1016/j.sna.2021.113329
DO - 10.1016/j.sna.2021.113329
M3 - Article
AN - SCOPUS:85121916836
SN - 0924-4247
VL - 334
JO - Sensors and Actuators A: Physical
JF - Sensors and Actuators A: Physical
M1 - 113329
ER -