화이트의 제작 Exciplexes에서 안정 방출과 전기 화학 셀 라이트 발광
Summary
The authors present a method for fabricating stable white-light-emitting electrochemical cells utilizing emission from exciplexes formed between a blue-emitting fluorene polymer and aromatic amines.
Abstract
저자 (청색 형광 폴리 (9,9- 디 -n- dodecylfluorenyl -2,7- 디일)으로 구성되는 활성층을 갖는 고분자 발광 전기 화학 전지에서 안정된 백색 발광 (PLECs)를 제조하는 방법을 제시 PFD)와 π 공역 트리 페닐 아민 분자. 이 백색 발광 전자적으로 흥분 상태에 PFD 및 아민 사이에 형성 exciplexes에서 유래. ', 4' 'PFD 4,4를 포함하는 장치 – 트리스 [2- 나프 틸 (페닐) 아미노] 트리 페닐 아민 (2-TNATA), 폴리 (에틸렌 옥사이드) 및 K 2 CF 3 SO 3 국제위원회 백색 발광을 나타내었다 드 난 ECLAIRAGE (CIE)는 (0.33, 0.43) 좌표와 연색 지수 (CRI)가 3.5 V. 일정한 전압 측정의인가 전압에서 라 = 73의는 CIE는 (0.27, 0.37), 라 좌표 것으로 나타났다 67, 5 V의 전압을인가 한 직후 관찰 발광색 거의 변하지 이후의 안정300 초.
Introduction
Research and development of polymer light-emitting electrochemical cells (PLECs) have expanded in recent years.1-15 PLECs are similar to organic light-emitting diodes (OLEDs) in that both are surface emitting organic devices and are expected to find their way into future lighting applications. OLEDs are already on the market, but the cost is still high, one reason being that OLEDs need a complicated device structure with multiple layers. In contrast, PLECs have a very simple device structure which consists of a single active layer (emitting layer) between a pair of electrodes. This means that PLECs are suited to mass production processes such as roll-to-roll printing and coating.
A PLEC has an active layer consisting of a fluorescent π-conjugated polymer (FCP). The FCP can be electrochemically doped with a polymer electrolyte (a mixture of an ion conducting polymer and a salt). The FCP is p-doped on the anode side and n-doped on the cathode side during operation, and generates excitons which emit light between the p- and n-doped regions. Therefore, the emission color reflects the exciton emission (=fluorescence) wavelength of the FCP.
Stable white light emission is important for lighting applications, and color mixing techniques which employ two or more emitters have been widely used to achieve this.10-14 Recently, we presented a different approach for obtaining stable white light emission, using an active layer which contains blue-fluorescent poly(9,9-di-n-dodecylfluorenyl-2,7-diyl) (PFD) and π-conjugated aromatic amines15. This white light emission comes from exciplexes formed between PFD and amine molecules in excited states. Exciplex emission has a broader spectrum compared to the exciton emission from the PDF and/or amines, which gives it a color close to that of natural light. This translates to a higher color rendering index (CRI), which is preferable for lighting applications.
In this article, the authors describe the procedure used to fabricate the exciplex based LECs and show the stability of their white light emission.
Protocol
Representative Results
Discussion
LEC의 소수성 PFD 및 방향족 아민과 친수성 폴리에틸렌 옥사이드와 KCF 3 SO 3을 포함하는 활성층을 가지고있다. 이러한 물질은 매우 다른 용해성을 가지고 있기 때문에, 스핀 코팅 용액의 제조 조심 불완전 매화를 피하기 위해 중요하다. 각 제 균일 한 혼합물을 형성 한 다음이 용액을 함께 혼합되어 충분한 매화 능력을 가진 용매에 개별적으로 완전히 용해되어야한다. 엑시톤과 excipl…
Declarações
The authors have nothing to disclose.
Acknowledgements
이 작품은 부분적으로 과학 연구에 대한 보조금의 원조 (번호 24225003)에 의해 지원되었다. 이 작품은 JX 니폰 오일 & 에너지 사에 의해 재정적으로 지원되었다.
Materials
| Poly(9,9-di-n-dodecylfluorenyl-2,7-diyl) (PFD) | Aldrich | 571660 | |
| 4,4’,4’’-Tris[2-naphthyl(phenyl)amino]triphenylamine (2-TNATA) | Aldrich | 768669 | |
| 9,9-Dimethyl-N,N’-di(1-naphthyl)-N,N’-diphenyl-9H-fluorene-2,7-diamine (DMFL-NPB) | Aldrich | ||
| Poly(ethylene oxide) (PEO) | Aldrich | 182028 | |
| Potassium tirifluoromethansulfonate (KCF3SO3) | Aldrich | 422843 | dried under vacuum at 200 °C for 2 hr prior to use |
| Chloroform | Kanto Chemical Co. | 08097-25 | dehydrated |
| Cyclohexanone | Kanto Chemical Co. | 07555-00 | |
| SCAT 20-X (detergent) | Daiichi Kogyo Seiyaku | diluted with water | |
| Acetone | Kanto Chemical Co. | 01866-25 | Electronic grage |
| 2-propanol | Kanto Chemical Co. | 32439-75 | Electronic grage |
| 13mm GD/X Disposable Filter Device PVDF Filter Media, Polypropylene Housing | Whatman | 6872-1304 | |
| UV/O3 Treating Unit | SEN Lights Co. | SSP16-110 | |
| Spectral Photo Detector | Otsuka Electronics | MCPD 9800 | |
| Voltage Current Source Monitor | ADCMT | 6241A | |
| Evaporation Mask | Tokyo Process Service Co., Ltd. | NA | The evaporation mask was wet-etched to create openings for patterned deposition of aluminum. The size of the mask is 100 mm x 100 mm x 0.2 mm-thick. |
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