JP2008277494A5 - - Google Patents

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JP2008277494A5
JP2008277494A5 JP2007118406A JP2007118406A JP2008277494A5 JP 2008277494 A5 JP2008277494 A5 JP 2008277494A5 JP 2007118406 A JP2007118406 A JP 2007118406A JP 2007118406 A JP2007118406 A JP 2007118406A JP 2008277494 A5 JP2008277494 A5 JP 2008277494A5
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homo
lumo
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本発明の有機発光素子は、陽極と陰極と、前記陽極と前記陰極との間に、第一の発光層と前記第一の発光層よりも陰極側に配置される第二の発光層とを有し、前記第一の発光層が第一のホストと第一のゲストとを含み、前記第二の発光層が第二のホストと第二のゲストとを含み、前記第一のゲストと前記第二のゲストの最大発光波長の差が２０ｎｍ以下であり、前記第一のホスト、前記第一のゲスト、前記第二のホスト及び前記第二のゲストが、以下に示す関係式（１）乃至（４）を満たすことを特徴とする。
｜ＨＯＭＯ（Ｈ１）｜＜｜ＨＯＭＯ（Ｇ１）｜ （１）
｜ＬＵＭＯ（Ｇ２）｜＜｜ＬＵＭＯ（Ｈ２）｜ （２）
｜ＨＯＭＯ（Ｇ２）｜＜｜ＨＯＭＯ（Ｈ２）｜ （３）
｜ＬＵＭＯ（Ｈ１）｜＜｜ＬＵＭＯ（Ｇ１）｜ （４）
（式（１）において、｜ＨＯＭＯ（Ｈ１）｜は第一のホストのＨＯＭＯエネルギーの絶対値を表し、｜ＨＯＭＯ（Ｇ１）｜は第一のゲストのＨＯＭＯエネルギーの絶対値を表す。式（２）において、｜ＬＵＭＯ（Ｈ２）｜は第二のホストのＬＵＭＯエネルギーの絶対値を表し、｜ＬＵＭＯ（Ｇ２）｜は第二のゲストのＬＵＭＯエネルギーの絶対値を表す。式（３）において、｜ＨＯＭＯ（Ｈ２）｜は第二のホストのＨＯＭＯエネルギーの絶対値を表し、｜ＨＯＭＯ（Ｇ２）｜は第二のゲストのＨＯＭＯエネルギーの絶対値を表す。式（４）において、｜ＬＵＭＯ（Ｈ１）｜は第一のホストのＬＵＭＯエネルギーの絶対値を表し、｜ＬＵＭＯ（Ｇ１）｜は第一のゲストのＬＵＭＯエネルギーの絶対値を表す。） The organic light-emitting device of the present invention, an anode and a cathode, between the anode and the cathode, and a second light-emitting layer disposed on the cathode side of the the first light-emitting layer first emission layer a, and a said first light emitting layer and the first of the first host-guest, the the second light-emitting layer and a second host and a second guest, the said first guest the difference between the maximum emission wavelength of the second guest is not less 20nm or less, the first host, the first guest, the second host and the second guest, relational expressions shown below (1) to (4), characterized in Succoth meet.
| HOMO (H1) | <| HOMO (G1) | (1)
| LUMO (G2) | <| LUMO (H2) | (2)
| HOMO (G2) | <| HOMO (H2) | (3)
| LUMO (H1) | <| LUMO (G1) | (4)
(In formula (1), | HOMO (H1) | represents the absolute value of the HOMO energy of the first host, and | HOMO (G1) | represents the absolute value of the HOMO energy of the first guest. Formula (2) in), | LUMO (H2) | represents the absolute value of the LUMO energy of the second host, | LUMO (G2) | represents the absolute value of the LUMO energy of the second guest in formula (3),. | HOMO (H2) | represents the absolute value of the HOMO energy of the second host, | HOMO (G2) | represents the absolute value of the HOMO energy of the second guest, and in formula (4), | LUMO (H1) | Represents the absolute value of the LUMO energy of the first host, and | LUMO (G1) | represents the absolute value of the LUMO energy of the first guest.)

Claims (5)

陽極と陰極と、
前記陽極と前記陰極との間に、第一の発光層と前記第一の発光層よりも陰極側に配置される第二の発光層とを有し、
前記第一の発光層が第一のホストと第一のゲストとを含み、
前記第二の発光層が第二のホストと第二のゲストとを含み、
前記第一のゲストと前記第二のゲストの最大発光波長の差が２０ｎｍ以下であり、
前記第一のホスト、前記第一のゲスト、前記第二のホスト及び前記第二のゲストが、以下に示す関係式（１）乃至（４）を満たすことを特徴とする有機発光素子。
｜ＨＯＭＯ（Ｈ１）｜＜｜ＨＯＭＯ（Ｇ１）｜ （１）
｜ＬＵＭＯ（Ｇ２）｜＜｜ＬＵＭＯ（Ｈ２）｜ （２）
｜ＨＯＭＯ（Ｇ２）｜＜｜ＨＯＭＯ（Ｈ２）｜ （３）
｜ＬＵＭＯ（Ｈ１）｜＜｜ＬＵＭＯ（Ｇ１）｜ （４）
（式（１）において、｜ＨＯＭＯ（Ｈ１）｜は第一のホストのＨＯＭＯエネルギーの絶対値を表し、｜ＨＯＭＯ（Ｇ１）｜は第一のゲストのＨＯＭＯエネルギーの絶対値を表す。式（２）において、｜ＬＵＭＯ（Ｈ２）｜は第二のホストのＬＵＭＯエネルギーの絶対値を表し、｜ＬＵＭＯ（Ｇ２）｜は第二のゲストのＬＵＭＯエネルギーの絶対値を表す。式（３）において、｜ＨＯＭＯ（Ｈ２）｜は第二のホストのＨＯＭＯエネルギーの絶対値を表し、｜ＨＯＭＯ（Ｇ２）｜は第二のゲストのＨＯＭＯエネルギーの絶対値を表す。式（４）において、｜ＬＵＭＯ（Ｈ１）｜は第一のホストのＬＵＭＯエネルギーの絶対値を表し、｜ＬＵＭＯ（Ｇ１）｜は第一のゲストのＬＵＭＯエネルギーの絶対値を表す。） An anode and a cathode;
Between the anode and the cathode, and a second light-emitting layer disposed on the cathode side of the the first light-emitting layer first emission layer,
The first emissive layer comprises a first host and a first guest;
The second emissive layer comprises a second host and a second guest;
The difference in maximum emission wavelength between the first guest and the second guest is 20 nm or less,
The first host, the first guest, the second host and the second guest, an organic light emitting device characterized Succoth satisfy equation (1) to (4) shown below.
| HOMO (H1) | <| HOMO (G1) | (1)
| LUMO (G2) | <| LUMO (H2) | (2)
| HOMO (G2) | <| HOMO (H2) | (3)
| LUMO (H1) | <| LUMO (G1) | (4)
(In formula (1), | HOMO (H1) | represents the absolute value of the HOMO energy of the first host, and | HOMO (G1) | represents the absolute value of the HOMO energy of the first guest. Formula (2) in), | LUMO (H2) | represents the absolute value of the LUMO energy of the second host, | LUMO (G2) | represents the absolute value of the LUMO energy of the second guest in formula (3),. | HOMO (H2) | represents the absolute value of the HOMO energy of the second host, | HOMO (G2) | represents the absolute value of the HOMO energy of the second guest, and in formula (4), | LUMO (H1) | Represents the absolute value of the LUMO energy of the first host, and | LUMO (G1) | represents the absolute value of the LUMO energy of the first guest.) 前記第一のゲストおよび前記第二のゲストの発光色は青色であることを特徴とする請求項１に記載の有機発光素子。The organic light-emitting element according to claim 1, wherein the emission color of the first guest and the second guest is blue. 前記第一のホストと前記第二のホストとが同一の化合物からなることを特徴とする請求項１又は２に記載の有機発光素子。 Said first host and the second host and an organic light-emitting device according to 請 Motomeko 1 or 2 you, comprising the same compound. 前記第一のホスト、前記第一のゲスト、前記第二のホスト及び前記第二のゲストが、さらに以下に示す関係式（５）及び（６）を満たすことを特徴とする請求項１乃至３のいずれか１項に記載の有機発光素子。
｜ＨＯＭＯ（Ｈ２）｜−｜ＨＯＭＯ（Ｇ２）｜≧０．１５ｅＶ （５）
｜ＬＵＭＯ（Ｇ１）｜−｜ＬＵＭＯ（Ｈ１）｜≧０．１５ｅＶ （６） The first host, the first guest, the second host and the second guest, and satisfies further shown below equation (5) and (6) 請 Motomeko 1 4. The organic light emitting device according to any one of items 1 to 3.
| HOMO (H2) | --HOMO (G2) | ≧ 0.15 eV (5)
| LUMO (G1) |-| LUMO (H1) | ≧ 0.15 eV (6) 前記第一のホストは下記化合物群（ａ）から選ばれる化合物であり、前記第二のホストは下記化合物群（ａ）から選ばれる化合物であり、前記第一のゲストは下記化合物群（ｂ）から選ばれる化合物であり、前記第二のゲストは下記化合物群（ｃ）から選ばれる化合物であることを特徴する請求項１乃至４のいずれか１項に記載の有機発光素子。The first host is a compound selected from the following compound group (a), the second host is a compound selected from the following compound group (a), and the first guest is the following compound group (b). 5. The organic light-emitting device according to claim 1, wherein the second guest is a compound selected from the following compound group (c).
Figure 2008277494
Figure 2008277494
JP2007118406A 2007-04-27 2007-04-27 Organic light emitting device Active JP4912209B2 (en)

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JP5205584B2 (en) * 2006-09-06 2013-06-05 ユー・ディー・シー アイルランド リミテッド Organic electroluminescence device and display device
JP5432487B2 (en) * 2008-08-20 2014-03-05 出光興産株式会社 Organic electroluminescence device
GB0906554D0 (en) * 2009-04-16 2009-05-20 Cambridge Display Tech Ltd Organic electroluminescent device
CN102484923B (en) * 2009-09-04 2016-05-04 株式会社半导体能源研究所 Light-emitting component, light-emitting device and manufacture method thereof
WO2011065138A1 (en) * 2009-11-27 2011-06-03 シャープ株式会社 Organic electroluminescence element, manufacturing method thereof, and organic electroluminescence display device
WO2011065137A1 (en) * 2009-11-27 2011-06-03 シャープ株式会社 Organic electroluminescence element, manufacturing method thereof, and organic electroluminescence display device
CN102668157B (en) 2009-11-27 2014-11-26 夏普株式会社 Organic electroluminescence element, manufacturing method thereof, and organic electroluminescence display device
US8933439B2 (en) * 2010-02-05 2015-01-13 Nitto Denko Corporation Organic light-emitting diode with enhanced efficiency
JP4781474B1 (en) 2010-03-31 2011-09-28 キヤノン株式会社 Organic light emitting device
JP2011258373A (en) * 2010-06-08 2011-12-22 Nippon Hoso Kyokai <Nhk> Organic el element and organic el display
WO2015151397A1 (en) * 2014-04-03 2015-10-08 パナソニックＩｐマネジメント株式会社 Organic el lighting panel, organic el lighting device and building material unit

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