Screenshot is not save properly into the folder.

Hi guys, am using Application.persistentDataPath to save my screenshot into my phone. I created one folder when i start the application, so i choose that folder for my destination path for saving my screenshot, but it's not working everytime it shows the screenshot under the data path only. where i miss the point for this condition?

This line is for save path in android:

 if(Shot_Taken == true)
         {
             Origin_Path = System.IO.Path.Combine(Application.persistentDataPath, Screen_Shot_File_Name);
             // This is the path to save screenshot.
             File_Path = "/mnt/sdcard/DCIM/Augmented Reality/" + Screen_Shot_File_Name;
             if(System.IO.File.Exists(Origin_Path))
             {
                 System.IO.File.Move(Origin_Path, File_Path);
                 Shot_Taken = false;
             }
         }

This line i used splashscreen scene in my application:

 private void Awake()
     {
         System.IO.Directory.CreateDirectory ("/mnt/sdcard/DCIM/Augmented Reality");
     }

and sometimes my screenshot is not taking properly, if i take 5 screenshots it will show only 2 or 3.

This is for taking screenshots:

 public void OnCaptureScreen()
     {
         Active = false;
         // Increament the screenshot count.
         Screen_Shot_Count++;
         // Save the screenshot name as Screenshot_1.png, Screenshot_2.png, with date format...
         Screen_Shot_File_Name = "Screenshot__" + Screen_Shot_Count + System.DateTime.Now.ToString("__yyyy-MM-dd") + ".png";
         Application.CaptureScreenshot(Screen_Shot_File_Name);
         StartCoroutine (Active_Objects());
     }