<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>The red emitting phosphors ZnBi<sub>2</sub>B<sub>2</sub>O<sub>7</sub>:xEu<sup>3+</sup> (x = 0‐0.035) are prepared by reactive sintering of Eu<sub>2</sub>O<sub>3</sub>, ZnO, Bi<sub>2</sub>O<sub>3</sub>, and H<sub>3</sub>BO<sub>3</sub> in air (1.</p> </abstract>