How to convert NCLOB to UTF-8?

Hello,

There is a table with one of the column type NCLOB. while querying the data I am using NVARCHAR ("COLUMNNAME") as "columnname";

Data returned is UTF-16 due to which when I render the string it has junk characters between every character like --> �i�c�c�o�l�o� �(�p�r�e�s�y�n.

How to get the data from backend as UTF-8? If it's not possible then should this be written in frontend?

Thanks,

Rashmi