Format cell size in .csv files

Gero esse csv

public ActionResult geraExcel()
        {
            List<vwFinancingReportViewModel> lista = new List<vwFinancingReportViewModel>();
            lista = dadosPlanilha();

            StringBuilder sb = new StringBuilder();
            sb.Append("Status;Nro.Pessoal;Nome Completo;Grade;Nro.Solicitação;Data Financiamento;" + 
                "Ano Fabric.;Modelo;Chassi;Valor Bem;Valor Financiado;Status Solicitação;Status Pagamento;" +
                "Valor Parcela;Juros;ReembolsoKM;Reembolso Depreciação;Sequencia;Data Pagamento\r\n");
            foreach(var item in lista)
            {
                sb.Append(item.valuepayment.ToString() + ";" + item.chassi.ToString() + ";" + item.solicitationid.ToString() + "\r\n");

            }
            //sb.Append("Eduardo;11111\r\n");
            //sb.Append("Coutinho;22222\r\n");

            HttpContext.Response.Clear();
            HttpContext.Response.AddHeader("content-disposition", string.Format("attachment;filename=" + DateTime.Now.ToString("yyyyMMdd") + "ReportFinanciamentoRH.csv"));

            HttpContext.Response.ContentType = "application/CSV";
            HttpContext.Response.ContentEncoding = System.Text.Encoding.Default;

            HttpContext.Response.Cache.SetCacheability(HttpCacheability.NoCache);

            HttpContext.Response.Write(sb.ToString());

            HttpContext.Response.End();

            return null;
        }

Can I increase the size of the cell, so that when I open the file via excel, the name (column header) can appear correctly, without the need for me to increase the cell?