Tsvakurudzo yazvino yeAvalanche photodetector
Infrared yekuona tekinoroji inoshandiswa zvakanyanya mukuzivikanwa kwemauto, kutarisa kwezvakatipoteredza, kuongororwa kwekurapa uye mamwe minda. Traditional infrared detectors vane zvimwe zvisingakwanisi mukushanda, zvakadai sekuona kunzwa, kukurumidza kupindura uye zvichingodaro. InAs/InAsSb Kirasi II superlattice (T2SL) zvinhu zvine yakanakisa photoelectric zvivakwa uye tunability, zvichiita kuti ive yakakodzera kune refu-wave infrared (LWIR) detectors. Dambudziko remhinduro isina simba mukuonekwa kwenguva refu infrared yave iri kunetsekana kwenguva yakareba, iyo inodzikamisa zvakanyanya kuvimbika kwekushandisa kwemagetsi mudziyo. Kunyangwe avalanche photodetector (APD photodetector) ine yakanakisa yekupindura kuita, inotambura neakanyanya rima ikozvino panguva yekuwedzera.
Kugadzirisa matambudziko aya, timu kubva kuYunivhesiti yeElectronics Sainzi neTekinoroji yekuChina yakabudirira kugadzira yepamusoro-soro yeClass II superlattice (T2SL) refu-wave infrared avalanche photodiode (APD). Vatsvakurudzi vakashandisa yakaderera auger recombination rate yeInAs/InAsSb T2SL absorber layer kudzikisa rima razvino. Panguva imwecheteyo, AlAsSb ine yakaderera k kukosha inoshandiswa seyakawanda layer yekudzvanya ruzha rwemudziyo uchichengetedza kuwana kwakakwana. Iyi dhizaini inopa mhinduro inovimbisa yekusimudzira kuvandudzwa kweiyo refu wave infrared yekuona tekinoroji. Iyo detector inotora yakatsika dhizaini dhizaini, uye nekugadzirisa chiyero chekuumbwa kweInAs neInAsSb, shanduko yakatsetseka yebhandi chimiro inowanikwa, uye kuita kwe detector kunovandudzwa. Panyaya yekusarudzwa kwezvinhu uye maitiro ekugadzirira, chidzidzo ichi chinotsanangura zvakadzama nzira yekukura uye magadzirirwo maparamita eInAs/InAsSb T2SL zvinhu zvinoshandiswa kugadzira detector. Kuona kuumbwa uye kukora kweInAs/InAsSb T2SL kwakakosha uye gadziriso yeparamendi inodiwa kuti uwane kushushikana. Mumamiriro ezvinhu ekuona kwenguva refu-wave infrared, kuti uwane iyo yakafanana yekucheka-yavelength seInAs/GaSb T2SL, inAs/InAsSb T2SL yakakora nguva inodiwa. Nekudaro, kukora monocycle kunokonzeresa kudzikira kweyekunyudza coefficient munzira yekukura uye kuwedzera kwehuwandu hunobudirira hwemakomba muT2SL. Inowanikwa kuti kuwedzera Sb chikamu kunogona kuwana kureba cutoff wavelength pasina kuwedzera zvakanyanya nguva imwechete ukobvu. Nekudaro, yakawandisa Sb kuumbwa kunogona kutungamira mukuparadzaniswa kwezvinhu zveSb.
Nokudaro, InAs/InAs0.5Sb0.5 T2SL ine Sb boka 0.5 yakasarudzwa seyakashanda yeAAPD.photodetector. InAs/InAsSb T2SL inonyanya kukura paGaSb substrates, saka basa reGaSb mukuronga kwekunetsa rinoda kutariswa. Chaizvoizvo, kuwana strain equilibrium kunosanganisira kuenzanisa avhareji yelatisi yenguva dzose ye superlattice yenguva imwe kune iyo latisi yenguva dzose ye substrate. Kazhinji, kuomarara kunetsa muInAs kunotsiviwa necompressive strain yakaunzwa neInAsSb, zvichikonzera kukora InAs layer pane InAsSb layer. Ichi chidzidzo chakayera mapikicha ekupindura maitiro eiyo avalanche photodetector, inosanganisira spectral mhinduro, yakasviba ikozvino, ruzha, nezvimwewo, uye yakasimbisa kushanda kweiyo yakatsika gradient layer dhizaini. Iyo avalanche yekuwedzera mhedzisiro yeavalanche photodetector inoongororwa, uye hukama pakati pekuwedzera chinhu uye chiitiko mwenje simba, tembiricha uye mamwe ma paramita anokurukurwa.
FIG. (A) Schematic diagram yeInAs/InAsSb refu-wave infrared APD photodetector; (B) Schematic dhayagiramu yemagetsi emagetsi pane yega yega APD photodetector.
Nguva yekutumira: Jan-06-2025