| 摘要 |
An organic semiconductor laser device is composed of a positive electrode layer, an electron hole-transporting layer, a light-emitting layer containing an organic dye and having an open end, an electron-transporting layer, and a negative electrode layer in order. The electron hole-transporting layer and the electron-transporting layer satisfy the conditions of 1<n1/n2 and 1<n1/n3 (n1 is a refractive index of the light-emitting layer determined at a wavelength of the light emitted in the light-emitting layer, n2 is that of the electron hole-transporting layer, and n3 is that of the electron-transporting layer) and further satisfy the conditions; <math-cwu id="MATH-US-00001"> <number>1</number> <math> <mrow> <mn>0.16</mn> <mo><</mo> <mfrac> <mrow> <msub> <mi>n</mi> <mn>2</mn> </msub> <mo>x</mo> <msub> <mi>d</mi> <mn>2</mn> </msub> <mo>x</mo> <msqrt> <mrow> <msup> <mrow> <mo>(</mo> <mfrac> <msub> <mi>n</mi> <mn>1</mn> </msub> <msub> <mi>n</mi> <mn>2</mn> </msub> </mfrac> <mo>)</mo> </mrow> <mn>2</mn> </msup> <mo>-</mo> <mn>1</mn> </mrow> </msqrt> </mrow> <mi>lambda</mi> </mfrac> </mrow> </math> <math> <mrow> <mn>0.16</mn> <mo><</mo> <mfrac> <mrow> <msub> <mi>n</mi> <mn>3</mn> </msub> <mo>x</mo> <msub> <mi>d</mi> <mn>3</mn> </msub> <mo>x</mo> <msqrt> <mrow> <msup> <mrow> <mo>(</mo> <mfrac> <msub> <mi>n</mi> <mn>1</mn> </msub> <msub> <mi>n</mi> <mn>3</mn> </msub> </mfrac> <mo>)</mo> </mrow> <mn>2</mn> </msup> <mo>-</mo> <mn>1</mn> </mrow> </msqrt> </mrow> <mi>lambda</mi> </mfrac> </mrow> </math> <mathematica-file id="MATHEMATICA-00001" file="US20030103537A1-20030605-M00001.NB"/> <image id="EMI-M00001" wi="216.027" he="66.9627" file="US20030103537A1-20030605-M00001.TIF" imf="TIFF" ti="MF"/> </math-cwu> (d2 is a thickness of the electron hole-transporting layer, d3 is a thickness of the electron-transporting layer, and lambd is the wavelength of light emitted in the light-emttting layer).
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