光伏组件对减反射膜的要求
Requirements of AR coatings on PV glass
➢ Broadband highly effective： c-Si cells: 300 nm ~ 1200 nm；
➢ Long-term durability； ➢ Low cost； ➢ Easy cleaning； ➢ Large area uniform;
Adhesion
No peer off
Pencil hardness
≥H
Power output
Increase ≥2.0 ％
微观结构控制
Microstructure control
120o
表面自组装技术实现憎水效果
➢ 均匀的颗粒尺寸分布 （Mono-dispersed particles） ➢ 精确的孔隙率与附着力控制（Precise thickness control） ➢ 易清洁（Easy cleaning）
室外使用性能测试系统
Outdoor performance testing system
每日发电量记录
Daily records of power outputs
归一化每日发电量记录
Normalized daily records of power outputs
总结
Summary
1. 多功能SiO2单层减反射镀膜技术提高太阳光能量透过率； (Multifunctional SiO2 AR-coating technology for improvement of solar transmittance)
3. 双层膜系减反射镀膜技术 (Double-layer AR-coating Technology)
4. 室外使用效果跟踪 (Records of Outdoor Energy Performance )
光伏玻璃与减反射膜
PV glass and AR coating
PV glass for modules：
Aging test
Acid resistance test
UV-exposure: No change
Damp heat : < 1.5 % T loss
Thermal cycle: < 1% T loss
< 1% Tpv loss
Salt mist test Less than 1% Tpv loss
AR-coating on PV glass can improve the power output of PV modulle of AR-coating
For a light wavelength of 600 nm, an AR-coating layer a thickness of 120 nm and refractive index of 1.25 is most effective.
2. 双层膜系减反射镀膜技术进一步提高太阳光能量透过率； (Double-layer AR-coating technology for better improvement of solar transmittance)
3. 室外使用效果跟踪表明减反射光伏玻璃应用效果优于普通 光伏玻璃 (Records of outdoor energy performance revealed that modules with AR-coatings generated more power than normal modules )
双层SiO2/TiO2高效减反射膜技术
SiO2/TiO2 double-layer AR-coating technology
Tpv(max) = 98.81%
SEM cross section
双层SiO2/TiO2高效减反射膜技术
SiO2/TiO2 double-layer AR-coating technology
600
900
Wavelength /nm
1200
Tph =
1200 nm 300 nm
T(
)η(
)S
1200 nm 300 nm
η(
)S
Photovoltaic transmittance for c-Si
多功能单层SiO2减反射膜技术
Multifunctional single-layer SiO2 AR-coatings
94
1.0
1.0
92
0.8
0.8
90
0.6
0.6
88
0.4
0.4
86
0.2
0.2
84 300 600 900 1200 1500 1800 2100 2400 Wavelength /nm
0.0 300 600 900 1200 1500 1800 2100 2400
Wavelength /nm
0.0 300
镀膜光伏玻璃的能量透过率
Solar Transmittance of AR-coated PV Glass
报告内容
Contents
1. 减反射光伏玻璃技术 (AR-coated Photovoltaic Glass Technology)
2. 多功能SiO2单层减反射镀膜技术 (Multifunctional SiO2 AR-coating Technology)
)S
S 2500 nm
300 nm
Solar energy transmittance
Tpv=
1200 nm 300 nm
T(
)S
S 1200 nm
300 nm
Photovoltaic transmittance
Transmittance /% Rel. Intensity
Quantum efficiency
感谢您的关注！
Thank you for your attention!
国际上现有技术现状
Various technological approaches
Chemical etching
Sol-gel dip-coating
不同的透过率计算方法
Various transmittance calculation methods
Te=
2500 nm 300 nm
T(
➢ Highly transparent，cheap ➢ Mechanical support ➢ Protection from enviroments
➢Low sun light absorption（<2%） ➢Refractive index：1.52 ➢Single side reflection loss: ～4%