Hello shreedara75,

Fellow Monk ikegami provided you with a solution to your problem. Just to add another possible solution that I just tested on my OpenOffice (LinuxOS) in case that someone is not working with WindowsOS:

#!/usr/bin/perl
use utf8;
use strict;
use warnings;
use Excel::Writer::XLSX;

my $workbook  = Excel::Writer::XLSX->new( 'simple.xlsx' );
my $worksheet = $workbook->add_worksheet();

$worksheet->write( "A1", "Fräsen und ndk (Kamera - Fräsaufnahme)" );
$workbook->close;
[download]

For further information see Excel::Writer::XLSX/UNICODE-IN-EXCEL.

Hope this helps.

BR / Thanos