{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,15]],"date-time":"2026-09-15T01:57:37Z","timestamp":1789437457915,"version":"build-2803163510"},"reference-count":81,"publisher":"IOP Publishing","issue":"23","license":[{"start":{"date-parts":[[2026,6,8]],"date-time":"2026-06-08T00:00:00Z","timestamp":1780876800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/publishingsupport.iopscience.iop.org\/iop-standard\/v1"},{"start":{"date-parts":[[2026,6,8]],"date-time":"2026-06-08T00:00:00Z","timestamp":1780876800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/iopscience.iop.org\/info\/page\/text-and-data-mining"}],"funder":[{"name":"Science and Engineering Research Board, Government of India","award":["CRG\/2022\/009394"],"award-info":[{"award-number":["CRG\/2022\/009394"]}]}],"content-domain":{"domain":["iopscience.iop.org"],"crossmark-restriction":false},"short-container-title":["Nanotechnology"],"published-print":{"date-parts":[[2026,6,12]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>\n                    In this work, we present a mathematical model for estimating the exciton lifetime in monolayer transition metal dichalcogenides (TMDs), including WS\n                    <jats:inline-formula>\n                      <jats:tex-math>\n                        \n                      <\/jats:tex-math>\n                      <mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" overflow=\"scroll\">\n                        <mml:mrow>\n                          <mml:msub>\n                            <mml:mi\/>\n                            <mml:mn>2<\/mml:mn>\n                          <\/mml:msub>\n                        <\/mml:mrow>\n                      <\/mml:math>\n                    <\/jats:inline-formula>\n                    , WSe\n                    <jats:inline-formula>\n                      <jats:tex-math>\n                        \n                      <\/jats:tex-math>\n                      <mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" overflow=\"scroll\">\n                        <mml:mrow>\n                          <mml:msub>\n                            <mml:mi\/>\n                            <mml:mn>2<\/mml:mn>\n                          <\/mml:msub>\n                        <\/mml:mrow>\n                      <\/mml:math>\n                    <\/jats:inline-formula>\n                    , MoS\n                    <jats:inline-formula>\n                      <jats:tex-math>\n                        \n                      <\/jats:tex-math>\n                      <mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" overflow=\"scroll\">\n                        <mml:mrow>\n                          <mml:msub>\n                            <mml:mi\/>\n                            <mml:mn>2<\/mml:mn>\n                          <\/mml:msub>\n                        <\/mml:mrow>\n                      <\/mml:math>\n                    <\/jats:inline-formula>\n                    , and MoSe\n                    <jats:inline-formula>\n                      <jats:tex-math>\n                        \n                      <\/jats:tex-math>\n                      <mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" overflow=\"scroll\">\n                        <mml:mrow>\n                          <mml:msub>\n                            <mml:mi\/>\n                            <mml:mn>2<\/mml:mn>\n                          <\/mml:msub>\n                        <\/mml:mrow>\n                      <\/mml:math>\n                    <\/jats:inline-formula>\n                    . The effective masses are calculated using density functional theory (DFT) within the local density approximation employing the Perdew\u2013Zunger exchange-correlation functional. Anisotropic confinement is considered to evaluate the exciton binding energies, and the Fermi\u2019s Golden rule is applied to calculate the oscillator strength. The model is validated against an AlGaAs\/GaAs double quantum well heterostructure with Coulomb interaction, and Keldysh-type screened Coulomb interaction is taken into account to evaluate the exciton ground-state properties in TMDs. The predicted binding energies (488\n                    <jats:inline-formula>\n                      <jats:tex-math>\n                        \n                      <\/jats:tex-math>\n                      <mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" overflow=\"scroll\">\n                        <mml:mrow>\n                          <mml:mo>\u2212<\/mml:mo>\n                        <\/mml:mrow>\n                      <\/mml:math>\n                    <\/jats:inline-formula>\n                    578 meV) and lifetimes (0.146\n                    <jats:inline-formula>\n                      <jats:tex-math>\n                        \n                      <\/jats:tex-math>\n                      <mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" overflow=\"scroll\">\n                        <mml:mrow>\n                          <mml:mo>\u2212<\/mml:mo>\n                        <\/mml:mrow>\n                      <\/mml:math>\n                    <\/jats:inline-formula>\n                    0.52 ns) obtained from our model for the monolayer TMDs are compared with the DFT-based models, other theoretical approaches, and reported time-resolved photoluminescence (PL) measurements. The effective lifetimes estimated by incorporating exciton thermalization effects show a good agreement with the PL decay measurements at room temperature. The present model relies solely on material parameters, and unlike the computationally intensive Green\u2019s-function-based Bethe\u2013Salpeter equation approaches, offers an efficient method for predicting exciton energies and lifetimes in two-dimensional semiconductors.\n                  <\/jats:p>","DOI":"10.1088\/1361-6528\/ae7265","type":"journal-article","created":{"date-parts":[[2026,5,25]],"date-time":"2026-05-25T19:47:47Z","timestamp":1779738467000},"page":"235201","update-policy":"https:\/\/doi.org\/10.1088\/crossmark-policy","source":"Crossref","is-referenced-by-count":2,"title":["Estimation of lifetime of excitons in monolayer transition metal dichalcogenides"],"prefix":"10.1088","volume":"37","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-1907-0506","authenticated-orcid":true,"given":"Rohit","family":"Ramesh Nimje","sequence":"first","affiliation":[{"name":"Vellore Institute of Technology"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1133-8616","authenticated-orcid":true,"given":"G","family":"Swati","sequence":"additional","affiliation":[{"name":"Vellore Institute of Technology"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1121-7542","authenticated-orcid":true,"given":"Ashutosh","family":"Mahajan","sequence":"additional","affiliation":[{"name":"Vellore Institute of Technology"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"266","published-online":{"date-parts":[[2026,6,8]]},"reference":[{"key":"nanoae7265bib1","doi-asserted-by":"publisher","first-page":"74","DOI":"10.1021\/nn2024557","type":"journal-article","article-title":"Single-layer MoS 2 phototransistors","volume":"6","author":"Yin","year":"2012","journal-title":"ACS Nano"},{"key":"nanoae7265bib2","doi-asserted-by":"publisher","first-page":"676","DOI":"10.1038\/nnano.2014.150","type":"journal-article","article-title":"Atomically thin p\u2013n junctions with van der Waals heterointerfaces","volume":"9","author":"Lee","year":"2014","journal-title":"Nat. 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