本征吸收曲线 Wavelength (pm) 0.5 0.60.70.80.911.21.523510 100 Absorption loss in n打ed region 10 Absorption loss in ultraviolet region 0. 0.01 2.5 2.0 1.5 【.0 0.5 0 Photon energy (eV)本征吸收曲线