I-Hielscher Ultrasound Technology

I-Perovskite Synthesis yi-Ultrasonication

Izimpendulo ezenziwa nge-ultrasonic eziyisisekelo futhi eziqinisiwe zinikeza indlela yokuqamba eyenziwe kahle, eguquguqukayo kanye nokuguquguqukayo enhlobonhlobo yokwenza izinto ezenziwe nge-light-activated, ezivame ukungalungiswa ngamasu ezejwayelekile.
I-crystallization ye-ultrasonic kanye kwezulu zamakristalu e-perovskite kuyindlela ephumelela kakhulu futhi enomnotho, evumela ukukhiqiza ama-nanocrystals e-perovskite esikalini sezimboni ukukhiqizwa kwesisindo.

I-Ultrasonic Synthesis ye-Perovskite Nanocrystals

Ama-organic-inorganic lead halide perovskites abonisa izakhiwo ezihlukile ze-optoelectronic ezifana nokufakwa okuphezulu kokukhanya, ubude bude besikhathi eside, ubude bokunqobeka kwenkampani, kanye nokushukumiseka okuphezulu kwothwala, okwenza i-perovskite ihlanganisa izinto ezisetshenziswayo eziphakeme kakhulu ekusebenzeni okuphezulu kumaphaneli elanga, ama-LEDs , ama-photodetectors, ama-lasers, njll.
I-Ultrasonication ingenye yezindlela ezingokomzimba zokusheshisa ukusabela okuhlukahlukene kwe-organic. Inqubo ye-crystallization ithonywa futhi ilawulwa ukwelashwa kwe-ultrasonic, okuphumela ezimeni zesayizi ezinqobekayo ze-single ‐ crystalline perovskite nanoparticles.

Isithombe se-TEM sezinhlaka ze-perovskite ezenziwe nge-provskite

Izithombe ze-TEM ze-CH3nH3I-PbBr3 Ama-QD (a) ne futhi (b) ngaphandle kokulashwa kwe-ultrasonic.

I-UIP2000hdT - i-ultrasonicator ye-2000W ephakeme yokukhiqiza izimboni ze-nano izinhlayiya.

I-UIP2000hdT nge-Pressurizable flow cell reaction

Isicelo solwazi




Qaphela kwethu Inqubomgomo yobumfihlo.


Amacala Ezifundo ze-Ultrasonic Perovskite Synthesis

Research has conducted manifold types of ultrasonically assisted perovskite crystal growth. In general, perovskite crystals are prepared with the liquid growth method. In order to precipitate perovskite crystals, the solubility of the target samples is slowly and controlled reduced in a precursor solution. Ultrasonic precipitation of perovskite nano crystals is mainly based on an antisolvent quenching.

I-Ultrasonic Crystallization ye-Perovskite Nanocrystals

UJang et al. (2016) bika ukuhlangana okusobala okusizwisisekayo okusebenzayo kwe-lead halide perovskite nanocrystals. Usebenzisa i-ultrasound, APbX3 ama-perovskite nanocrystals anezinhlobonhlobo zezingoma, lapho i-A = CH3nH3, Cs, noma i-HN = CHNH3 (formamidinium), no-X = Cl, Br, noma mina, bathola umoya. I-Ultrasonication isheshisa inqubo yokuqedwa kwangaphambi kwesikhathi (AX ne-PbX2) ku-toluene, futhi isilinganiso sokuchithwa sinquma inani lokukhula kwama-nanocrystals. Kamuva, ithimba labacwaningi lazakhela isithombe se-high-sensitivity photodetectors by homogenously spin coating the nanocrystals usayizi omfushane kuzindawo ezinkulu ze-silicon oxide substrates.

Ukusatshalaliswa kwekristalu ye-Ultrasonic

Ukusabalalisa kwezinhlayiyana ze-CH3NH3PbBr3 (a) ne futhi (b) ngaphandle kokulashwa kwe-ultrasonic.
Chen et al. 2017

I-Ultrasonic Asymetrical Crystallization yePerovskite

Peng et al. (2016) yathuthukisa indlela entsha yokukhula ngokusekelwe ku-crystallization ye-cavitation-triggered asymmetrical crystallization (CTAC), ekhuthaza i-nucleation ye-heterogenible ngokunikeza amandla anele okunqoba umgoqo we-nucleation. Kafushane nje, bethula ama-pulps amafushane kakhulu we-ultrasonic (≈ 1sec) kwikhambi lapho ifika ezingeni eliphakeme lokuthambekisa nge-antisolvent vapor infusion. Ukushiswa kwe-ultrasonic kwethulwa emazingeni aphezulu wokuphakama, lapho i-cavitation ibanga khona izehlakalo ezinkulu ze-nucleation ngakho-ke ukukhula kwe-plethora yamakristalu amancane. Ngokuthembisayo, MAPbBr3 amafilimu ama-monocrystalline akhula ebusweni bezindawo ezahlukahlukene kungakapheli amahora ambalwa ukwelashwa kwe-cyclic ultrasonication.

I-Ultrasonic Synthesis ye-Perovskite Quantum Dots

Chen et al. (2017) abakhona emsebenzini wabo wokucwaninga indlela ephumelelayo yokulungiselela amachashazi we-perovskite quantum (QDs) ngaphansi kwe-Ultradiation irradiation. I-Ultrasonication isetshenziswa njengendlela yemishini ukuze kusheshiswe ukuhanjiswa kwamachashazi we-perovskite quantum. Inqubo ye-crystallization yamachashazi we-perovskite quantum iyaqina futhi ilawulwa wukuphathwa kwe-ultrasonic, okuholela usayizi ofaniswe kahle wama-nanocrystals. Ukuhlaziywa kwesakhiwo, usayizi wezinhlayiyana kanye ne-morphology yamachashazi e-perovskite quantum kubonise ukuthi i-crystallization ye-ultrasonic inika ubukhulu obuncane bezinhlayiyana nokusatshalaliswa kwesayizi kuyunifomu. Kusetshenziswa i-ultrasonic (= sonochemical) synthesis, futhi bekukwazi ukukhiqiza amachashazi we-perovskite quantum ngezingoma zamakhemikhali ezahlukahlukene. Lezo zingoma ezihlukile kumakristalu e-perovskite avunyelwe ukungakwazi ukuphuma iziqongo kanye nemiphetho ye-adsorption ye-CH3nH3I-PbX3 (X = Cl, Br kanye nami), okuholele ku-gamut yombala ebanzi ngokweqile.

ultrasonic Ukuhlakazwa

I-Ultrasonication yokumiswa kwe-nano kuyizinhlayiyana nama-inks kuyindlela ethembekile yokubasabalalisa homogencwelely ngaphambi kokusebenzisa ukumiswa kwe-nano-substrates efana namagridi noma ama-electrodes. (cf. Belchi et al. 2019; Pichler et al. 2018)
Ukuhlakazeka kwe-Ultrasonic kusingatha kalula ukugxila okuphezulu okuqinile (isb. Ama-pastes) bese kusatshalaliswa izinhlayiya ze-nano-zinhlayiya ezihlakazekile ezizimele ukuze kukhiqizwe ukumiswa okufananayo. Lokhu kuqinisekisa ukuthi kwisicelo esilandelayo, lapho i-substrate ihlanganiswa, akukho ukugoqwa okufana ne-agglomerates kuphazamisa ukusebenza kwephakoji.

I-Hielscher Ultrasonics inikezela nge-disperser enamandla e-Ultrasonics ukuze ilungiselele ukumiswa kwe-nano-silone eyi-hanogeneous, isb ukukhiqizwa kwebhethri le-lithium

Ukuhlakazeka kwe-Ultrasonic kulungiselela ukumiswa okungatheni nano-sized: ijika eliluhlaza – ngaphambi kwe-sonication / ijika elibomvu ngemuva kwe-sonication

Ama-processor we-Ultrasonic we-Perovskite Precipitation

Ama-Hielscher Ultrasonics aqamba futhi enze izinhlelo ezisezingeni eliphakeme ze-Ultrason zokwakheka kwe-sonochemical kwezixhobo zekristalu ezisezingeni eliphakeme. Njengomholi wemakethe futhi onolwazi lwesikhathi eside ekusebenzeni kwe-Ultrasonics, iHielscher Ultrasonics isiza amakhasimende ayo kusuka ekuhlolweni kokuqala kokusebenza ukwenza ukucubungula nokwenza ukufakwa kokugcina kwezinqubo zokusebenza kwe-ultrasonics zokukhiqiza ngezinga elikhulu. Ukunikeza iphothifoliyo egcwele kusuka kuma-lab kanye ne-bench-top ultrasonicators kuze kusetshenziswe izinqubo zezimboni ezisetshenziswayo ze-ultrasonic, i-Hielscher ingakuncoma idivaysi efanelekile yenqubo yakho ye-nanocrystal.
I-FC100L1K-1S ne-InsertMPC48Onke ama-ultrasonicators ama-Hielscher angacashunwa ngokunembile futhi angahunyushwa kusuka kumanani aphansi kakhulu ukuya phezulu kakhulu. I-amplitude ingenye yezinto ezibalulekile ezithonya umthelela nokuqothuka kwezinqubo ze-sonication. Hielscher Ultrasonics’ Amaphrosesa we-ultrasonic aletha isibuko esikhulu kakhulu se-amplopes esimboza ububanzi bezinto ezithambile kakhulu futhi ezithambile kwizicelo eziqine kakhulu nezibhubhisayo. Ukukhetha ukulungiselelwa okuhle kwe-amplitude, i-booster ne-sonotrode kuvumela ukusetha umthelela we-ultrasonic odingekayo wenqubo yakho ethile. I-Hielscher's flow cell reactor ekhethekile ifaka i-MPC48 – I-MultiPhaseCavitator (bheka isithombe ngakwesokunxele) – ivumela ukufaka umjovo esigabeni sesibili ngama-cannulas angama-48 njengesixhaxha esisheshayo endaweni eshisayo ye-patitational hot, lapho amagagasi asebenza ngokweqile e-ultrasound asabalalisa izigaba zombili ngengxube ye-homogeneous. I-MultiPhaseCavitator ilungele ukuqala amaphuzu we-crystal seeding futhi ilawule ukusabela kwezulu kwe-perovskite nanocrystals.
Ama-processor we-Hielscher wezimboni ze-Hielscher angakhipha ama-amplopes aphakeme ngokweqile. Amandla afinyelela ku-200µm angaqhutshwa kalula ngokuqhubekayo ekusebenzeni kwe-24/7. Okokuphakama okuphezulu kakhulu, i-sonotrodes eyenziwe ngezifiso ye-ultrasonics iyatholakala. Ukuba namandla kwemishini yokusebenza kwe-Hielscher sika-Hielscher kuvumela ukusebenza kwe-24/7 emsebenzini osindayo nasezindaweni ezifunwayo.
Amakhasimende ethu anelisekile ngokuqina okuqinile nokuthembeka kwezinhlelo zikaHielscher Ultrasonic. Ukufakwa emikhakheni yesicelo esisebenza kanzima, izindawo ezifunwayo kanye nokusebenza kwe-24/7 kuqinisekisa ukucutshungulwa okusebenzayo nokunempilo. Ukuqina kwenqubo ye-Ultrasonic kunciphisa isikhathi sokucubungula futhi kufinyelela imiphumela engcono, ie izinga eliphakeme, isivuno esiphakeme, imikhiqizo emisha.
Ithebula elingezansi linikeza isibonakaliso somthamo wokucubungula we-ultrasonicators wethu:

Iqoqwana Ivolumu flow Rate Amadivayisi ezinconyiwe
0.5 kuya ku-1.5mL na I-VialTweeter
1 kuya ku-500mL 10 kuya ku-200mL / min UP100H
10 kuya ku-2000mL 20 kuya ku-400mL / min UP200Ht, UP400St
0.1 kuya ku-20L 0.2 kuya ku-4L / min I-UIP2000hdT
10 kuya ku-100L 2 kuya ku-10L / iminithi I-UIP4000hdT
na 10 kuya ku-100L / iminithi UIP16000
na sikhulu yinhlanganisela UIP16000

Xhumana nathi! / Cela Us!

Cela ulwazi oluthe xaxa

Sicela usebenzise ifomu elingezansi, uma ufisa ukucela ulwazi oluthe xaxa mayelana ne-homogenization yama-ultrasonic. Sizojabula ukukunikeza uhlelo lwe-ultrasonic ukuhlangabezana nezidingo zakho.









Sicela uqaphele wethu Inqubomgomo yobumfihlo.


I-Hielscher Ultrasonics yenza ama-homogenizer aphezulu we-ultrasonic wokuhlakazeka, i-emulsation kanye nokukhishwa kweseli.

Amandla aphezulu we-homogenizer ephezulu I-Lab kuya umshayeli futhi izimboni zezimboni.

Izincwadi / Izinkomba



Amaqiniso Okufanele Ukwazi

I-Perovskite

I-Perovskite yigama elichaza amaminerali i-Perovskite (eyaziwa nangokuthi yi-calcium titanium oxide noma i-calcium titanate, ifomula yamakhemikhali i-CaTiO3) kanye nesakhiwo esithile. Ngokuya ngegama elifanayo, i-mineral Perovskite ifaka isakhiwo se-perovskite.
I-Perovskite compounds ingenzeka ngesakhiwo se-cubic, tetragonal noma orthorhombic futhi ibe nefomula yamakhemikhali i-ABX3. A no-B ziyizicucu, kuyilapho u-X emele i-anion, enamathela kubo bobabili. Kumakhompiyutha e-perovskite, i-A cation inkulu kakhulu kune-B cation. Amanye amaminerali anesakhiwo se-perovskite yiLoparite neBridgmanite.
Ama-Perovskites anesakhiwo esikhethekile sekristalu futhi kulesi sakhi izinto ezahlukahlukene zamakhemikhali zingahlanganiswa. Ngenxa yesakhiwo esikhethekile sekristalu, ama-molekyuli e-perovskite angakhombisa izakhiwo ezahlukahlukene ezibalulekile, njengokuthi i-superconductivity, i-sumoresistance ephezulu kakhulu, kanye / noma i-Ferroelectricity, eyenza lezo zingxube zihehe kakhulu kwizicelo zezimboni. Ngaphezu kwalokho, inani elikhulu lezinto ezahlukahlukene lingahlanganiswa ndawonye ukwenza izakhiwo ze-perovskite, ezenza ukuthi kuhlanganiswe, kuguqulwe futhi kuqiniswe izici ezithile ezibonakalayo. Abaphenyi, ososayensi kanye nabathuthukisi bokwenza inqubo basebenzisa lezo zinketho ukuklama ngokukhetha nokwandisa izici zomzimba, zokukhanya nezikagesi.
Izakhiwo zabo ze-optoelectronic zenza ama-hybrid perovskites ama-candidate afanele kuma-solar cell application kanye nama-solovskite cell solar awubuchwepheshe obuthembisayo, obungasiza ukukhiqiza inani elikhulu lamandla ahlanzekile, anendawo ezungezile.
Imikhawulo ebuhlungu ye-optoelectronic ye-‐ crystalline perovskite eyodwa kubikwe ezincwadini:

Izinto zokwakha Igebe le-band noma ukuqala kokufaka Ukuhamba [cm2 V-1 S-1] Ukuziphatha [Ω-1 cm-1] Isikhathi sokuthwala sendlela kanye nendlela Ukuhlushwa kwesithwali bese uthayipha [cm-3] (n noma p) Ubude obunzima Ubungakanani besicupho [cm-3]
I-MAPbBr3 I-2.21 eV 570 nm 115 (TOF) 20-60 (IHholo) 38 (SCLC) ama-awa = 41 ama-nsB = 457 ns (PL) 5 × 109 kuya ku-5 × 1010 P 3–17 µm 5.8 × 109
I-MAPbI3 1,51 eV 821 nm 2,5 (SCLC) I-10−8 ama-awa = 22 ama-nsB = 1032 ns PL 2 × 1010 2-8 µm 3.3 × 1010
I-MAPbBr3 I-2.18 eV 574 nm 24 (SCLC) ama-awa = 28 ns 1.3-4.3 µm 3 × 1010
I-MAPbI3 I-1.51 eV 820 nm 67.2 (SCLC) ama-awa = 18 ama-nsB = 570 ns PL 1.8-10.0 µm 1.4 × 1010
I-MAPbI3 850 nm 164 ± 25 Hole ukuhamba (SCLC) 105 Hole ukuhamba (IHholo) 24 ± 6.8 elektrron SCLC I-82 ± 5 µs TPV 95 ± 8 µs improsance spectroscopy (IS) 9 × 109 P 175 ± 25 µm 3.6 × 1010 umgodi 34,5 × 1010 nge-elektroni
I-MAPbI3 1.53 eV 784 nm 34 IHholo I-8.8 × 1011 P I-1.8 × 109 yembobo engu-4.8 × 1010 nge-elektroni
I-MAPbBr3 1.53 eV 784 nm 34 IHholo I-8.8 × 1011 P I-1.8 × 109 yembobo engu-4.8 × 1010 nge-elektroni
I-MAPbBr3 I-2.24 eV 537 nm Ihholo le-4.36 3.87 × 1012 P 2.6 × 1010 umgodi 1.1 × 1011 nge-elektroni
I-MAPbCl3 I-2.24 eV 537 nm Ihholo le-4.36 3.87 × 1012 P 2.6 × 1010 umgodi 1.1 × 1011 nge-elektroni
I-MAPbCl3 I-2.97 eV 402 nm 179 IHholo 5.1 × 109 n
I-MAPbCl3 I-2.88 eV 440 nm 42 ± 9 (SCLC) 2.7 × 10-8 ama-awa = 83 ama-nsB = 662 ns PL I-4.0 × 109 P 3.0-8.5 µm 3.1 × 1010
I-FAPbI3 I-1.49 eV 870 nm 40 ± 5 Hole ukuhamba kwe-SCLC 1.8 × 10-8 2.8 × 109 1.34 × 1010