Akwai bege don haɓaka ingantaccen na'urorin siliki na yau da kullun

Ba asiri ba ne cewa mashahuran na'urorin hasken rana na silicon suna da iyakancewa ta yadda yadda suke canza haske zuwa wutar lantarki. Wannan saboda kowane photon yana fitar da electron guda ɗaya ne kawai, kodayake makamashin ƙwayar haske zai iya isa ya fitar da electrons guda biyu. A cikin wani sabon binciken, masana kimiyya na MIT sun nuna cewa za a iya shawo kan wannan ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun abubuwa, wanda ke ba da hanya ga ƙwayoyin hasken rana na silicon tare da ingantaccen inganci.

Ikon photon na fitar da na'urorin lantarki guda biyu ya tabbata a ka'idar shekaru 50 da suka gabata. Amma gwaje-gwajen da suka yi nasara na farko an sake yin su ne kawai shekaru 6 da suka gabata. Bayan haka, an yi amfani da tantanin rana da aka yi da kayan halitta azaman gwaji. Zai zama abin sha'awa don matsawa zuwa mafi inganci da yalwar silicon, wani abu da masana kimiyya kawai suka iya cimma ta hanyar aiki mai yawa.

A lokacin karshe gwaji gudanar ya haifar da wani silicon solar cell, ka'idar yadda ya dace iyaka iyaka daga 29,1% zuwa 35%, kuma wannan ba iyaka. Abin baƙin ciki shine, saboda wannan, dole ne a yi tantanin halitta ta ƙunshi abubuwa daban-daban guda uku, don haka a wannan yanayin ba zai yiwu a samu ta da silicon monolithic kawai ba. Lokacin da aka haɗa, tantanin rana shine sandwich da aka yi da kayan halitta. tetracene a cikin nau'i na fim na farfajiya, fim din hafnium oxynitride mafi bakin ciki (atoms da yawa) kuma, a gaskiya ma, wafer silicon.

Layer tetracene yana ɗaukar photon mai ƙarfi kuma yana canza kuzarinsa zuwa ɓoyayyen ɓoyayyen ɓoyayyiya a cikin Layer. Waɗannan su ne abin da ake kira quasiparticles exciton. Tsarin rabuwa ana kiransa da fission singlet exciton fission. Zuwa ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙima, abubuwan haɓaka suna yin kama da electrons, kuma waɗannan abubuwan haɓakawa ana iya amfani da su don samar da wutar lantarki. Tambayar ita ce yadda za a canja wurin waɗannan abubuwan farin ciki zuwa silicon da bayan haka?

Wani bakin bakin ciki na hafnium oxynitride ya zama wani nau'in gada tsakanin fim din tetracene na saman da silicon. Hanyoyin da ke cikin wannan Layer da tasirin saman kan siliki suna canza excitons zuwa electrons, sannan komai yana tafiya kamar yadda aka saba. Gwajin ya sami damar nuna cewa wannan yana ƙara haɓakar ƙwayoyin hasken rana a cikin bakan shuɗi da kore. A cewar masana kimiyya, wannan ba shine iyaka don haɓaka aikin siliki mai amfani da hasken rana ba. Amma ko fasahar da aka gabatar za ta ɗauki shekaru ana tallata su.

source: 3dnews.ru