Kim, Jungdong Ahn, Hak-Young Kim, Seung Gi Oh, Eunsoon Ju, Byeong-Kwon Choi, Won Jun Cho, So-Hye 2024-01-20T02:31:44Z 2024-01-20T02:31:44Z 2021-09-04 2017-01-06 0957-4484 https://pubs.kist.re.kr/handle/201004/123211 We studied temperature-dependent photoluminescence (PL) spectra of lead selenide (PbSe) dendrites and cubes grown by a solvothermal method. Their PL peaks were located at similar to 8 mu m at 10 K with a full width at half maximum (FWHM) of 10 meV. Using the temperature-dependent FWHM values, we obtained carrier-phonon coupling coefficients for PbSe. We also demonstrated mechanochemical synthesis of polycrystalline PbS nanoparticles and their successful conversion into a PbSe layer composed of nanocrystals by a selenization process with thermal treatment. The nanocrystals were found to be formed by the orientation alignment of small grains in the process. The PL peak energies of the PbSe layers as well as the PbSe dendrites and the cubes agreed well with their absorption edges in the transmission spectra, indicating that the photoluminescence originates from the band-edge emission. The band-edge emissions hold promise for the development of potential mid-infrared light sources using PbSe fabricated by these methods. English IOP PUBLISHING LTD PBSE NANOCRYSTALS LINEWIDTHS GAP Photoluminescence properties of lead selenide produced by selenization and a solvothermal method Article 10.1088/0957-4484/28/1/015702 1 NANOTECHNOLOGY, v.28, no.1 NANOTECHNOLOGY 28 1 scie scopus 000412942600002 2-s2.0-85003946018 Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Science & Technology - Other Topics Materials Science Physics Article PBSE NANOCRYSTALS LINEWIDTHS GAP lead selenide photoluminescence selenization mid-infrared FWHM carrier-phonon interaction