Mea ʻike kiʻi infrared hoʻokele ponoʻī kiʻekiʻe

Hoʻokele ponoʻī hana kiʻekiʻemea ʻike kiʻi infrared

infraredmea ʻike kiʻiLoaʻa iā ia nā ʻano o ka hiki ke pale aku i ke komo ʻana, ka hiki ke ʻike i ka pahuhopu ikaika, ka hana āpau-ʻino a me ka hūnā maikaʻi. Ke pāʻani nei ia i kahi kuleana koʻikoʻi i nā kahua e like me ka lāʻau lapaʻau, ka pūʻali koa, ka ʻenehana lewa a me ka ʻenekinia kaiapuni. I waena o lākou, ʻo ka mea i hoʻokele ponoʻī ʻiaʻike ʻana i ka photoelectricʻO ka chip hiki ke hana kūʻokoʻa me ka ʻole o kahi lako mana waho ua huki nui i ka nānā ʻana ma ke kahua o ka ʻike infrared ma muli o kāna hana kūikawā (e like me ke kūʻokoʻa ikehu, ke kiʻekiʻe o ka ʻike a me ke kūpaʻa, a pēlā aku). I ka hoʻohālikelike ʻana, ʻo nā chips ʻike photoelectric kuʻuna, e like me nā chips infrared e pili ana i ka silicon-based a i ʻole narrowbandgap semiconductor, ʻaʻole wale e koi i nā voltages bias hou e hoʻokele i ka hoʻokaʻawale ʻana o nā mea lawe photogenerated e hana i nā photocurrents, akā pono pū kekahi i nā ʻōnaehana hoʻoluʻu hou e hōʻemi i ka walaʻau thermal a hoʻomaikaʻi i ka pane ʻana. No laila, ua lilo i mea paʻakikī ke hoʻokō i nā manaʻo hou a me nā koi o ka hanauna hou o nā chips ʻike infrared i ka wā e hiki mai ana, e like me ka hoʻohana ʻana i ka mana haʻahaʻa, ka liʻiliʻi, ke kumukūʻai haʻahaʻa a me ka hana kiʻekiʻe.

I kēia mau lā aku nei, ua hāpai nā hui noiʻi mai Kina a me Suedena i kahi pin heterojunction self-driven short-wave infrared (SWIR) photoelectric detection chip hou e pili ana i nā kiʻiʻoniʻoni graphene nanoribbon (GNR) / alumina / silicon kristal hoʻokahi. Ma lalo o ka hopena hui pū ʻia o ka hopena optical gating i hoʻāla ʻia e ka interface heterogeneous a me ke kahua uila i kūkulu ʻia, ua hōʻike ka chip i ka pane ultra-kiʻekiʻe a me ka hana ʻike ma ka voltage bias ʻole. Loaʻa i ka chip ʻike photoelectric ka helu pane A e like me 75.3 A/W ma ke ʻano hoʻokele ponoʻī, kahi helu ʻike o 7.5 × 10¹⁴ Jones, a me kahi pono quantum waho kokoke i 104%, e hoʻomaikaʻi ana i ka hana ʻike o ke ʻano like o nā chips e pili ana i ka silicon ma kahi moʻolelo 7 mau kauoha o ka nui. Eia kekahi, ma lalo o ke ʻano hoʻokele maʻamau, ʻo ka helu pane o ka chip, ka helu ʻike, a me ka pono quantum waho e like me 843 A/W, 10¹⁵ Jones, a me 105% pakahi, ʻo ia mau mea āpau nā waiwai kiʻekiʻe loa i hōʻike ʻia ma ka noiʻi o kēia manawa. I kēia manawa, ua hōʻike pū kēia noiʻi i ka hoʻohana maoli ʻana o ka chip ʻike photoelectric ma ke ao maoli ma nā kahua o ke kamaʻilio optical a me ke kiʻi infrared, e hōʻike ana i kona hiki ke hoʻohana nui ʻia.

I mea e aʻo pono ai i ka hana photoelectric o ka photodetector e pili ana i nā graphene nanoribbons /Al₂O₃/ silicon kristal hoʻokahi, ua hoʻāʻo nā mea noiʻi i kāna mau pane static (current-voltage current) a me nā pane ʻano dynamic (current-time current). No ka loiloi pono ʻana i nā ʻano pane optical o ka graphene nanoribbon /Al₂O₃/ monocrystalline silicon heterostructure photodetector ma lalo o nā voltages bias like ʻole, ua ana nā mea noiʻi i ka pane au dynamic o ka hāmeʻa ma 0 V, -1 V, -3 V a me -5 V biases, me ka nui o ka mana optical o 8.15 μW/cm². Hoʻonui ka photocurrent me ka reverse bias a hōʻike i ka wikiwiki o ka pane wikiwiki ma nā voltages bias āpau.

ʻO ka mea hope loa, ua hana nā mea noiʻi i kahi ʻōnaehana kiʻi a ua hoʻokō pono i ke kiʻi ʻana o ka infrared pōkole-nalu ponoʻī. Hana ka ʻōnaehana ma lalo o ka bias ʻole a ʻaʻohe ona hoʻohana ikehu iki. Ua loiloi ʻia ka hiki ke kiʻi o ka photodetector me ka hoʻohana ʻana i kahi pale maka ʻeleʻele me ke ʻano leka "T" (e like me ka mea i hōʻike ʻia ma ke Kiʻi 1).

I ka hopena, ua hana pono kēia noiʻi i nā photodetectors mana ponoʻī e pili ana i nā graphene nanoribbons a ua hoʻokō i kahi helu pane kiʻekiʻe e haki ana i ka moʻolelo. I kēia manawa, ua hōʻike maikaʻi nā mea noiʻi i nā hiki ke kamaʻilio optical a me ke kiʻi o kēiamea ʻike kiʻi pane wikiwikiʻAʻole wale kēia hoʻokō noiʻi e hāʻawi i kahi ala kūpono no ka hoʻomohala ʻana i nā graphene nanoribbons a me nā mea optoelectronic e pili ana i ka silicon, akā hōʻike pū i kā lākou hana maikaʻi loa e like me nā photodetectors infrared pōkole hoʻoikaika ponoʻī.