Navigation Links
Flat panel displays


Introduction
One of the fastest-growing segments of the semiconductor industry is concerned with a new generation of graphic displays for communications and high-definition television sets. For phosphors that might be used as the active medium in such displays, the critical characteristics are the lifetimes and wavelengths of their emissions.


Experiment and Results
Because the lifetimes and wavelengths of emissions were required, the SPEX FLUOROLOG-τ steady-state and lifetime spectrofluorometer was chosen for this investigation. To further complicate matters, the lifetime of the phosphor had to be obtained in a short period (three to five minutes) because of the rapidly changing character of the material. In addition, the phosphor and matrix were highly scattering, so stray-light rejection was crucial.

Figure 1 shows the emission spectrum of the final phosphor, confirming a useful visible emission dominated by the 550-nm peak.


In Figure 2 the results of the quick lifetime study (eight frequencies scanned in five minutes) indicate a three-component system, dominated by a very fast (109 s) decay. This fast emission assures that the phosphor will produce a high quantum yield within a timeframe compatible with refreshing the CRTs screen.


Conclusion
This particular investigation of phosphor emission characteristics was made possible by the excellent stray-light reflection, sensitivity, and wide lifetime range of the FLUOROLOG-t producing rapid and accurate characterization of the phosphor.


back to top
'"/>

Source:


Page: All 1

Related biology technology :

1. National stem-cell panel, including UW profs, urges close watch on research
2. Star panel re-evaluates Sarbanes-Oxley one year in at SEC headquarters
3. Gates displays softwares future to UW-Madison students
4. Outpouring of tsunami relief displays power of the Internet
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:10/12/2017)... Irvine, ca (PRWEB) , ... October 12, 2017 ... ... for the Surgical Wound Market with the addition of its newest module, US ... the $1.2B market for thrombin hemostats, absorbable hemostats, fibrin sealants, synthetic sealants and ...
(Date:10/11/2017)... ... ... Personal eye wash is a basic first aid supply for any work environment, but most ... you rinse first if a dangerous substance enters both eyes? It’s one less decision, and ... unique dual eye piece. , “Whether its dirt and debris, or an acid or alkali, ...
(Date:10/11/2017)... ... ... Disappearing forests and increased emissions are the main causes of the evolving air ... living in larger cities are affected by air pollution related diseases. , That is ... globally - decided to take action. , “I knew I had to take action ...
(Date:10/10/2017)... , ... October 10, 2017 , ... ... Center’s FirstHand program has won a US2020 STEM Mentoring Award. Representatives of the ... for Excellence in Volunteer Experience from US2020. , US2020’s mission is to change ...
Breaking Biology Technology:
(Date:4/19/2017)... New York , April 19, 2017 ... competitive, as its vendor landscape is marked by the ... the market is however held by five major players ... Safran. Together these companies accounted for nearly 61% of ... of the leading companies in the global military biometrics ...
(Date:4/13/2017)... PUNE, India , April 13, 2017 According ... Identity Proofing, Identity Authentication, Identity Analytics, Identity Administration, and Authorization), Service, Authentication ... by MarketsandMarkets™, the IAM Market is expected to grow from USD 14.30 ... Annual Growth Rate (CAGR) of 17.3%. ... ...
(Date:4/11/2017)... 11, 2017 NXT-ID, Inc. (NASDAQ:   ... announces the appointment of independent Directors Mr. Robin D. ... Board of Directors, furthering the company,s corporate governance and expertise. ... Gino Pereira , ... forward to their guidance and benefiting from their considerable expertise ...
Breaking Biology News(10 mins):