I-Peking University yabona umthombo we-perovskite we-laser oqhubekayo omncane omncane kune-1 skwele micron

I-Peking University yabona i-perovskite iyaqhubekaumthombo we-laserincane kune-1 skwele micron
Kubalulekile ukwakha umthombo oqhubekayo we-laser ngendawo yedivaysi engaphansi kwe-1μM2 yokuhlangabezana nesidingo sokusetshenziswa kwamandla okuphansi kwesivumelwano sokuxhumeka kwe-on-chip optical (<10 fj bit-1). Kodwa-ke, njengoba usayizi wedivaysi encipha, ukulahleka kwe-optical kanye nezinto ezibonakalayo kukhuphuka kakhulu, ngakho-ke ukufeza usayizi wedivaysi engaphansi kwe-micron nokumpompela okuqhubekayo kwemithombo ye-laser kuyinselele enkulu kakhulu. Eminyakeni yamuva nje, izinto ze-Halide Perovskite zithole ukunakwa okubanzi emkhakheni wama-lasers aqhubekayo aphenya ngokuqhubekayo ngenxa yokuthola kwabo okuphezulu okuphezulu kanye ne-Exciton Popularties yabo ehlukile. Indawo yedivaysi yemithombo ye-perovskite eqhubekayo ye-laser imithombo ebikiwe kuze kube manje imithombo emikhulu kune-10μm2, kanye nemithombo ye-submicron laser konke kudinga ukugcwala kwamandla aphezulu amandla okuvuselela.

Ephendula le nselelo, iqembu elicwaningayo leZhang Qing kusuka esikoleni sesayensi yesayensi kanye nobunjiniyela be-Peking University balungiselela ngempumelelo imithombo ye-leser eyodwa ephezulu ye-Purovskite ilungiselelwe nge-Purovskite i-Laser Fires ngendawo yedivayisi ephansi njenge-0.65μm2. Ngasikhathi sinye, i-Photon yembulwa. Inqubo ye-Exciton Polariton e-sufficnron eqhubekayo yenqubo yokucinga e-suppelling iqondakala ngokujulile, enikeza umbono omusha wokuthuthukiswa kosayizi omncane we-templembold leconductor ama-tempa. Imiphumela yocwaningo, enesihloko esithi "I-Provight Wave Pumpoved Perovskite Lasers ngendawo yedivayisi engezansi 1 μm2," muva nje yashicilelwa ngezinto ezithuthukisiwe.

Kulomsebenzi, i-Inordic Perovskite CSPBBBR3 Single Crystal Micron Sheet yalungiswa ku-Sapphere substrate nge-Chemical Vapor Deposition. Kwabonakala ukuthi ukuhlanganiswa okuqinile kwe-Perovskite Excitons ene-Medical Wall Disccavity Photons emazingeni okushisa egumbini aphumela ekwakhekeni kwePolariton ye-Excitonic. Ngochungechunge lobufakazi, njenge -near to nonlinear emission ukuqina, ukuguqulwa komugqa omncane, ukuguqulwa kwe-fluorence okuqhubekayo kwe-fluorescence chlstal e-CSPBBR3 single crystal ye-CSPBBBR3 single crystal esisezingeni eliphakeme Ngasikhathi sinye, kwatholakala ukuthi umkhawulo womthombo we-laser we-submacron uqhathaniswa nowomthombo omkhulu we-laser, futhi angaba ngaphansi (umfanekiso 1).

Umdwebo 1umthombo wokukhanya we-laser

Ngaphezu kwalokho, lo msebenzi uhlola bobabili ngokuhlolwa futhi ngokweqiniso, futhi wembula indlela ye-Exciton-Polarised Excitons ekufezekisweni kwemithombo ye-laser eqhubekayo ye-submicron eqhubekayo. I-Photon Ethuthukisiwe-Excecting ePerovskites ePerovskites ephakeme iphumela ekukhuphukeni okubalulekile kwinkomba eyenziwe yi-80, eyandisa kakhulu inzuzo yemodi yokunxephezela ukulahlekelwa yimodi. Lokhu kubuye kuphumelele emthonjeni we-Revicron Laser we-Revicron Laser ngesici sekhwalithi esiphakeme esiphakeme se-miccavity kanye ne-informarwidwidth emncane (Umdwebo 2). Umshini futhi uhlinzeka ngemininingwane emisha ekuthuthukisweni kobukhulu obuncane, ama-lasers aphansi aphansi asuselwa kwezinye izinto ze-semiconductor.

Umdwebo 2

INgoma Jiepeng, umfundi ongu-2020 ZHIBO ovela esikoleni sezinto zokwakha kanye nobunjiniyela be-Peking University, ungumbhali wokuqala wephepha, futhi i-Peking University iyunithi lokuqala lephepha. UZhang Qing neXiong Qihua, uprofesa wePhysics eTsinghua University, bangababhali abahambisanayo. Umsebenzi wasekelwa yiNational Natural Science Foundation of China kanye neBeijing Science Foundation yentsha evelele.