量子点材料具有发光光谱窄、发光波长可调及荧光量子产率高等特点, 其制成的发光器件在提升色域方面更具潜力。本文介绍了一种由蓝光 LED激发 CdSe红、绿光量子点并结合表色系统计算方法配得白光的计算方法。经多次实验确定, 红、绿光量子点与胶水配比为 (1∶60)和(1∶10), 胶量测试范围为 1.4 μL～2.2 μL和 3.0 μL～5.0 μL。采用传统 LED制作方式和分层结构制得样品, 测试此胶量范围对蓝光的吸收、转化比率, 经 Matlab拟合得到胶量与吸收、转化率的函数关系。取上述测试胶量范围形成的白光区域点 (0.34, 0.3), 得到红、绿光量子点胶量为 1.9 μL和 4.55 μL, 根据光谱计算公式得到对应的理论光谱。再根据上述胶量制作验证样品, 测试得到色坐标点为 (0.3409, 0.2992)且对应的光谱与理论光谱也基本重合。

Quantum dot materials have the characteristics of narrow luminescence spectrum, adjustable luminescence wavelength and high fluorescence quantum yield. The quantum dot LEDs have more potential in improving color gamut. In this paper, a method of white light generation by blue LED excited CdSe red and green quantum dots is introduced. The ratio of red and green quantum dots to glue was (1∶60) and (1∶10), and the test range of glue content was 1.4 μL～2.2 μL and 3.0 μL～5.0 μL. The samples were prepared by traditional method and layered structure. The absorption and conversion ratio of blue light in the range of glue amount were tested. The function relationship between glue amount and absorption and conversion was obtained by Matlab fitting. When taking the dots (0.34, 0.3) in white light region formed in the above test glue amount range, the red and green quantum dots were calculated with glue amount of 1.9 μL and 4.55 μL, and the corresponding theoretical spectrum was established according to the spectral calculation formula. According to the above glue amount, the verification samples were made and tested the color coordinates (0.3409, 0.2992) and the homologous spectra were basically coincident with the theoretical spectra.