Sabon bincike kan na'urar gano hoto ta InGaAs mai siriri sosai

Sabon bincike kan siririn jikina'urar gano hoto ta InGaAs
Ci gaban fasahar daukar hoton infrared mai gajeren zango (SWIR) ya ba da gudummawa sosai ga tsarin hangen nesa na dare, duba masana'antu, binciken kimiyya, da kariyar tsaro da sauran fannoni. Tare da karuwar bukatar ganowa fiye da hasken da ake iya gani, ci gaban na'urori masu auna hotuna masu gajeren zango na infrared shi ma yana karuwa koyaushe. Duk da haka, cimma babban ƙuduri da ƙarancin hayaniyana'urar gano hoto mai faɗi-faɗihar yanzu yana fuskantar ƙalubale da yawa na fasaha. Duk da cewa na'urar gano infrared ta InGaAs ta gargajiya na iya nuna ingantaccen ingancin canza hoto da kuma motsi na mai ɗaukar kaya, akwai babban saɓani tsakanin manyan alamun aikinsu da tsarin na'urar. Don samun ingantaccen ingancin quantum (QE), ƙira na gargajiya suna buƙatar Layer na sha (AL) na micromita 3 ko fiye, kuma wannan ƙirar tsarin tana haifar da matsaloli daban-daban.
Domin rage kauri na layin sha (TAL) a cikin infrared na gajeren zango na InGaAsna'urar gano hoto, ramawa ga raguwar sha a tsawon tsayin tsayi yana da mahimmanci, musamman lokacin da kauri na ƙaramin yanki na sha ya haifar da rashin isasshen sha a cikin kewayon tsawon tsayin ...

Idan aka kwatanta da tsarin haske na ƙarfe na gargajiya, tsarin resonance na yanayin jagora zai iya samar da tasirin shaƙar resonance da yawa, wanda ke haɓaka ingancin shaƙar hasken dogon zango. Masu bincike sun inganta ƙirar maɓalli na tsarin resonance na yanayin jagora, gami da period, abun da ke cikin abu, da kuma abin cikawa, ta hanyar hanyar nazarin raƙuman haɗin gwiwa (RCWA). Sakamakon haka, wannan na'urar har yanzu tana riƙe da ingantaccen sha a cikin gajeren zangon infrared. Ta hanyar amfani da fa'idodin kayan InGaAs, masu binciken sun kuma bincika martanin spectral dangane da tsarin substrate. Rage kauri na Layer sha yakamata ya kasance tare da raguwar EQE.
A ƙarshe, wannan binciken ya yi nasarar ƙirƙirar na'urar gano InGaAs mai kauri na micromita 0.98 kawai, wanda ya fi siriri fiye da tsarin gargajiya sau 2.5. A lokaci guda, yana riƙe da ingancin adadi na sama da 70% a cikin kewayon tsawon nisan nm 400-1700. Nasarar da aka samu ta na'urar gano ingancin ...