Sun photometer with light-emitting diodes as spectrally selective detectors.
نویسنده
چکیده
Light-emitting diodes can function as spectrally selective detectors in a miniature, inexpensive sun photometer that measures atmospheric turbidity and precipitable water.
منابع مشابه
A 5-year study of a new kind of photosynthetically active radiation sensor.
Light-emitting diodes (LED), which are designed as quasi-monochromatic light sources, can also function as spectrally selective photodiodes. This provides a new kind of photosynthetically active radiation (PAR) sensor that is inexpensive and has much better stability over time than interference filters used in some PAR sensors. The action spectrum of photosynthesis in green plants has principle...
متن کاملThin-film Encapsulation of Organic Light-Emitting Diodes Using Single and Multilayer Structures of MgF2, YF3 and ZnS
In this research, the lifetime of green organic light emitting diodes (OLEDs) is studied using four passivation layers. To encapsulate the OLEDs, MgF2, YF3, composed of alternating MgF2/ZnS and YF3/ZnS layers were grown by thermal vacuum deposition. Measurements show that the device lifetime is significantly improved by using YF3 and ZnS as passivation layers. However, diodes encapsulated by Mg...
متن کاملEffects of LED Light on Seed Emergence and Seedling Quality of Four Bedding Flowers
Recently much attention has been paid by horticulturists to light-emitting diodes as a new source of economical and spectral-selective light. The reason is mainly coming from their versatility in handling and mounting, long working time, wattage use efficiency and lower heat production. In this study we examined their potential in promoting seed germination and producing quality flower seedling...
متن کاملGraded-host phosphorescent light-emitting diodes with high efficiency and reduced roll-off
Related Articles Encapsulating light-emitting electrochemical cells for improved performance Appl. Phys. Lett. 100, 193508 (2012) Efficiency degradation behaviors of current/thermal co-stressed GaN-based blue light emitting diodes with vertical-structure J. Appl. Phys. 111, 093110 (2012) Influence of laser lift-off on optical and structural properties of InGaN/GaN vertical blue light emitting d...
متن کاملOn the origin of the redshift in the emission wavelength of InGaN/GaN blue light emitting diodes grown with a higher temperature interlayer
Related Articles Multilayered graphene anode for blue phosphorescent organic light emitting diodes Appl. Phys. Lett. 100, 133304 (2012) Multilayered graphene anode for blue phosphorescent organic light emitting diodes APL: Org. Electron. Photonics 5, 82 (2012) Electroluminescence from strained germanium membranes and implications for an efficient Si-compatible laser Appl. Phys. Lett. 100, 13111...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Applied optics
دوره 31 33 شماره
صفحات -
تاریخ انتشار 1992