Q. Consider the following statements regarding Organic Light Emitting Diodes (OLEDs):

1. They use a series of thin films in their structure.
2. They produce brighter light using less energy in comparison to LEDs.
3. They are composed of hydrocarbon chains.

Which of the above statements is/are correct?
Answer: 1, 2 and 3
Notes: All three statements are correct. OLEDs operate using a series of thin organic layers (thin films). They exhibit higher energy efficiency and better brightness than traditional LEDs. The organic materials used are primarily composed of hydrocarbon compounds, responsible for their light-emitting properties upon electrical excitation.