Phantomjs scraping + utf8 output

$scrapingUrl="http://asite.com"

$fullPathIncFileName = $MyInvocation.MyCommand.Definition
$currentScriptName = $MyInvocation.MyCommand.Name
$currentExecutingPath = $fullPathIncFileName.Replace($currentScriptName, "")
$jsPath = $currentExecutingPath + "js/scraping.js"
$si = New-Object -TypeName System.Diagnostics.ProcessStartInfo
$si.FileName = "D:\Distrib\phantomjs\phantomjs.exe"
$si.Arguments = "--proxy-type=none --load-images=no $jsPath $scrapingUrl"
$si.StandardOutputEncoding = [System.Text.Encoding]::UTF8
$si.RedirectStandardOutput = $TRUE
$si.UseShellExecute = $FALSE
$si.CreateNoWindow = $TRUE

$process = [System.Diagnostics.Process]::Start($si)

$started = $FALSE;
while (-not $process.StandardOutput.EndOfStream)
{
    Start-Sleep 1
    $process.Refresh();
    $line =  $process.StandardOutput.ReadLine()
    if($started){
        $Output = $Output + $line
    }
    if($line -eq ">>>>>>>data>>>>>>>"){ #data marker
        $started = $TRUE
    }
}
$Output|Out-File "result.txt"
Write-Host $Output