How to add date at end of filename using powershell

Question

I want to add date and time at end of log file . I tried some of them but they shows same error

My codes which i tried:

$deploymentName="testFolderStatus" 
$date=Get-Date -Format "yyyy-MM-dd HH:mm:ss"
$name = $deploymentName
$LogFile = "C:\"+$name+"$(get-date -format "yyyy-MM-dd HH:mm:ss").log"

$deploymentName="testFolderStatus" 
$date=Get-Date -Format "yyyy-MM-dd HH:mm:ss"
$name = $deploymentName+"-"+$date
$LogFile = "C:\"+$name+".log"

$deploymentName="testFolderStatus" 
$date=Get-Date -Format "yyyy-MM-dd HH:mm:ss"
$name = $($deploymentName)+"-"+$($date)
#$name= $deploymentName
$LogFile = "C:\$($name).log"

Any help will be thankfull.