| 초록 |
White LEDs were fabricated by precoating blue InGaN LEDs with blends of a green emitting polymer (Poly [{9,9-dioctyl-2,7-divinylenefluorenylene)-alto-co-(2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylene}], PFPV) and a red emitting polymer (Poly[1-methoxy-4-(2-ethylhexyloxy-2,5-phenylenevinylene)], MEH-PPV), which acted as the phosphor. The two polymers were blended in different weight ratios, which were found to affect the green (555nm) and red (610nm) emission intensity. The CIE-1931 coordinate, Tc and Ra all changed as the MEH-PPV content increased. |
