If an entity (person, place, or thing) is part of Google’s Knowledge Graph (a database with billions of entries), Google will automatically generate a knowledge panel when a user searches for the name of a particular entity. Google has not disclosed the exact criteria for getting a knowledge panel, but having a Wikipedia page is a good indicator of qualification.
Entities can gain or lose knowledge panels when Google updates its Knowledge Graph algorithm. You cannot pay for or request a knowledge panel. As a small business owner, you can, however, create a free Google business profile that functions similarly.