Resolution of places photos using js and google maps api v3 (places library)

I am developing a web site which can display photos of few places. I get the photos like this:

var photos = typeof place.photos !== 'undefined' ? place.photos[0].getUrl({ 'maxWidth': 100, 'maxHeight': 125 }) : '';
if (photos.length) {//...//}

Unfortunately, when I want to display the photos they appear with a very bad definition:

Note: I display the photo with w3schools slideshows and I set the photos like this:

var images = document.getElementById("PhotoFond").getElementsByTagName("img");
for (i=0; i<images.length; i++;) {

    if (!photosSlide[i]) {return;}
    images[n - 1].src = photosSlide[i];

}

However, when I go to google maps and find the same photo (link to the same photo), the quality is better.

How can I have the same resolution?