The first LEDs were made from GaAs, which has a band gap of 1.43 eV. What wavelength

Question:

The first LEDs were made from GaAs, which has a band gap of 1.43 eV. What wavelength of light would be emitted from an LED made from GaAs? What region of the electromagnetic spectrum does this light correspond to: UV, visible, or IR?

Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Related Book For book-img-for-question

Chemistry The Central Science

ISBN: 978-0321696724

12th edition

Authors: Theodore Brown, Eugene LeMay, Bruce Bursten, Catherine Murphy, Patrick Woodward

See More Books

Question Posted: Apr 19, 2016 07:36 AM

See More Questions

Red light-emitting diodes are made from GaAs and GaP solid solutions, GaPxAs1-x (see Exercise 12.73). The original red LEDs emitted light with a wavelength of 660 nm. If we assume that the band gap...
Pure germanium has a band gap of 0.67eV. The Fermi energy is in the middle of the gap. (a) For temperatures of 250 K, 300 K, and 350 K, calculate the probability f(E) that a state at the bottom of...
Germanium has a band gap of 0.67eV. Doping with arsenic adds donor levels in the gap 0.01eV below the bottom of the conduction band. At a temperature of 300 K, the probability is 4.4 x 10-4 that an...
On August 31, 2018, Rijo Equipment Repair Corp.'s opening trial balance was as follows. The company prepares adjusting entries monthly. During September, the following transactions were completed:...
Francis Matthews owns and operates Daffodil Advertising Services. On January 1, 2013, Retained Earnings had a balance of $475,000. During the year, Francis invested an additional $50,000 in exchange...
When would it be preferable to consider an attribute an entity?
Use the assignment method for loading. LO.1
Amelias Bookstore reported net income of $62,000 for the current year. The following information is also available for the year: $5,000 depreciation expense, $5,500 increase in inventory, $2,000...
A section 83(b) election creates ordinary income at the time of the grant. Ture or False
Allie has bought a new apple orchard. The orchard has a single file of trees, numbered from 1 to N. Each tree has a certail number of ripe apples. Allie has a rule she wants to follow. She wants to...
The semiconductor GaP has a band gap of 2.2 eV. Green LEDs are made from pure GaP. What wavelength of light would be emitted from an LED made from GaP?
GaAs and GaP (Eg = 2.26 eV) make solid solutions that have the same crystal structure as the parent materials, with As and P randomly distributed throughout the crystal. GaPxAs1 -x exists for any...
Describe the role of tax accounting.
Toro Corp. reports the following two years of balance sheets and some additional information. 2019 2018 Cash S 92,915 $ 31,355 Accounts receivable 94,000 80,850 Inventory 179,000 157,600 Prepaid...
The Westchester Chamber of Commerce periodically sponsors public service seminars and programs. Currently, promotional plans are under way for this year's program. Advertising alternatives include...
Mastery Problem: Differential Analysis and Product Pricing WoolCorp WoolCorp buys sheep's wool from farmers. The company began operations in January of this year, and is making decisions on product...
Ross Co. is an oil and gas company located in the Western United States. Ross follows U.S. GAAP in recording and reporting its financial transactions and has a year-end of 12/31. During the fiscal...
The following unadjusted trial balance is for ACE CONSTRUCTION CO. as of the end of its 2017 fiscal year. The June 30, 2016, credit balance of the owners capital account was $57,000, and the owner...
A sequential circuit has one lip-lop Q, two inputs X and Y, and one output S. The circuit consists of a D lip-lop with S as its output and logic implementing the function with D as the input to the D...
Tiger, Inc. signed a lease for equipment on July 1, 2007.The lease is for 10 years (the useful life of the asset).The first of 10 equal annual payments of $500,000 was made on July 1, 2007.The...
Calculate the amount of work input a refrigerator needs to make ice cubes out of a tray of 0.25 kg liquid water at 10oC. Assume the refrigerator works in a Carnot cycle between 8oC and 35oC with a...
A steel bottle V = 0.1 m3 contains R-134a at 20C, 200 kPa. It is placed in a deep freezer where it is cooled to -20C. The deep freezer sits in a room with ambient temperature of 20C and has an inside...
Liquid sodium leaves a nuclear reactor at 800C and is used as the energy souce in a steam power plant. The condenser cooling water comes from a cooling tower at 15C. Determine the maximum thermal...
Required information Skip to question [ The following information applies to the questions displayed below. ] Forten Company's current year income statement, comparative balance sheets, and...
Give a breakdown of all the intangible assets with the values shown in the statement of financial position of Unilever in 2022.
1-The yield to maturity will be greater than the coupon rate when a bond is selling at a premium. Select one: a. False b. True 2-Which one of the following would have the greatest present value,...

The first LEDs were made from GaAs, which has a band gap of 1.43 eV. What wavelength

Question:

Step by Step Answer:

The band gap D E of GaAs is 143 eV The visible portion ...View the full answer

Chemistry The Central Science

Students also viewed these Physical Chemistry questions