LED discolored as a result of exposure to incompatible chemicals

July 3, 2019

The presence of incompatible volatile organic compounds (VOCs) in LED-based solid-state lighting (SSL) designs can impair the performance and reduce the lifetime of these illumination systems. Glues, conformal coatings, O-rings, gaskets, and potting compounds are examples of materials frequently used in the construction of LED-based luminaires or lamps and often contain VOCs. The presence of chemically incompatible VOCs on or near LEDs can degrade the light output levels or cause changes in the chromaticity point of the light. The photograph in Figure 1 above is an example of this VOC degradation on the surface of an LED. This sensitivity to VOCs is not unique to one LED manufacturer but is a known problem for all types of blue, royal blue and white-light LEDs. Chemical incompatibility in SSL is often a localized phenomenon that occurs in luminaire designs that seal portions of the system, resulting in an LED operating environment having elevated temperatures with little or no air movement. However, with proper design and adequate testing, chemical incompatibility effects can be prevented

Spotlight

MECS

MECS is the global leader in sulfuric acid process technology and related high performance products custom engineered for acid plant production environments. These process technologies combined with value added technologies for ethanol production, heat exchange and specialized air pollution control form a diversified and strong business positioned for serving customers world wide. MECS has built long term relationships throughout the world using strategically positioned local offices, sales reps and agents, joint ventures, licensees and a respected and experienced global supply chain. The foundations of MECS were constructed and began with Monsanto Enviro-Chem Systems Inc. This original company was formed as a wholly owned subsidiary of Monsanto Company in 1969 through a consolidation of several existing process technology, product and services businesses. Some of these businesses were established as early as 1917.

OTHER ARTICLES

Transporting biological and chemical materials - what you need to know

Article | February 13, 2020

The landscape of biological and chemical logistics has changed rapidly - as have the regulatory frameworks around it. What has not necessarily kept pace is the end-user understanding of the nature of these logistical processes, their opportunities and their constraints. Twenty years ago, the transmission of biological and chemical materials was limited to a small range of organisations: usually national and international research companies, hospitals, major university departments, police and military departments with forensic responsibilities.

Read More

Setting record straight on testing harm in chemicals

Article | February 13, 2020

The modern world is built on chemicals, be it the medicines we use, or cleaning fluids, crop protection products, or the raw materials for everything from laptops and mobile phones to clothes and furniture. Across all, we have created an entire modern society with chemicals, and, as a result, constantly stretched the size of the world population we can feed, clothe and shelter. Yet, balancing all the gains from the modern chemistry around us against any negative environmental and human impact has been a rising concern, making for ever greater focus on testing and on risk assessment.

Read More

Why chemical characterization is the best way to assess patient risk

Article | February 11, 2020

Everyone is very familiar with the phrase when buying a house: All that really matters are three things - location, location, and location. This same principle applies to extractables and leachables chemistry analysis – the three things that truly matter are identification, identification, and identification. The greatest growth in the past ten years in demonstrating the safety of medical devices and container closure systems for drugs has been using analytical chemistry to determine what chemicals can leach from the device and what the patient is exposed to during its intended use.

Read More

How Chemical Companies Benefit from the Experience Economy

Article | February 10, 2020

To feel or experience from a business engagement started with customer experience mainly in the consumer products business. Today it has extended to even knowledge industries like the chemical industry where experiencing or feeling can be leveraged to include all stake holders from customers primarily to employees to supply chain people & suppliers and all else. With digital technologies this has become easier than before. The benefits from promoting the ‘feel’ or ‘experience’ emotion could be multifarious for the chemical industry as described in this article.

Read More

Spotlight

MECS

MECS is the global leader in sulfuric acid process technology and related high performance products custom engineered for acid plant production environments. These process technologies combined with value added technologies for ethanol production, heat exchange and specialized air pollution control form a diversified and strong business positioned for serving customers world wide. MECS has built long term relationships throughout the world using strategically positioned local offices, sales reps and agents, joint ventures, licensees and a respected and experienced global supply chain. The foundations of MECS were constructed and began with Monsanto Enviro-Chem Systems Inc. This original company was formed as a wholly owned subsidiary of Monsanto Company in 1969 through a consolidation of several existing process technology, product and services businesses. Some of these businesses were established as early as 1917.

Events