PHP DOMDocument saveHTML Adds Charachter

Question

I'm trying to use DOMDocument and when I saved the HTML, it seems to be adding extra special charachters on the output.

$output = '<div>©Deneme</div>';

$html = new DOMDocument("1.1");
$html->loadHTML($output);

echo $html->saveHTML();

The output is

<div>©Deneme</div>

Why does the output has "Â"? I couldn't figure it out.

Thank you,