| 摘要 |
PROBLEM TO BE SOLVED: To provide a light-emitting element whose thickness can be increased easily and which can operate at low driving voltage by novel means which is different from prior art, and a light-emitting element with low power consumption and high color purity, and a light-emitting element with low power consumption and high yield.SOLUTION: A light-emitting element has a structure in which a first layer 102, a second layer 103, and a third layer 104 containing a light-emitting material are provided between an anode 101 and a cathode 105 in this order in a direction from the anode 101 to the cathode 105. The third layer 104 is in contact with the cathode 105. The second layer 103 is formed using an n-type semiconductor or a mixture containing the n-type semiconductor, or a mixture containing an organic compound with a carrier transporting property and a material with a high electron donating property. The third layer 104 is formed using a p-type semiconductor or a mixture containing the p-type semiconductor, or a mixture containing an organic compound with a carrier transporting property and a material with a high electron accepting property.SELECTED DRAWING: None |
