Kev paub

Qhov zoo thiab qhov tsis zoo ntawm nyias zaj duab xis solar cells

Qhov zoo thiab qhov tsis zoo ntawm nyias zaj duab xis solar cells

Nyias-film solar cells yog dav siv nyob rau hauv photovoltaic ua liaj ua teb tsev cog khoom thiab photovoltaic chaw uas yuav tsum tau lub teeb kis tau tus mob. Koj puas paub dab tsi yog qhov zoo thiab qhov tsis zoo ntawm nyias zaj duab xis solar cells? Lub hnub ci vaj huam sib luag no siv tau pes tsawg xyoo?

Tam sim no, cov hnub ci nyias nyias nyias muaj xws li: cadmium telluride nyias zaj duab xis hnub ci, tooj liab indium gallium selenide nyias zaj duab xis hnub ci, thiab amorphous silicon nyias zaj duab xis hnub ci.

1. Qhov zoo ntawm nyias zaj duab xis solar cells

(1) Tus nqi ntawm tshav ntuj nrog tus nqi nqus siab.

GaAs belongs rau III-V compound semiconductor cov ntaub ntawv, thiab nws lub zog sib txawv yog 1.4eV, uas tsuas yog tus nqi ntawm siab nqus hnub ci, uas yog tsim nyog rau kev sib piv nrog lub hnub ci spectrum.

(2) Kub kub tsis kam.

Nyob rau hauv cov xwm txheej ntawm 250 ° C, qhov kev hloov pauv photoelectric tseem zoo heev, thiab nws qhov kev ua tau zoo tshaj plaws photoelectric hloov dua siab tshiab yog kwv yees li 30%, uas yog qhov tshwj xeeb tshaj yog tsim rau kub-kub tsom rau nyias zaj duab xis hnub ci.

(3) Tus nqi qis.

Siv silicon wafers ua substrates, cov txheej txheem heteroepitaxial ntawm MOCVD thev naus laus zis yog ib txoj hauv kev zoo los txo tus nqi ntawm GaAs hlwb.

2. Qhov tsis zoo ntawm nyias zaj duab xis hnub ci

(1) Ib qho yooj yim deliquescent.

Cov txheej txheem kev loj hlob ntawm nyias zaj duab xis hnub ci hlwb txiav txim siab tias nyias zaj duab xis hnub ci yog qhov ua rau deliquescent, yog li cov dej tsis kam ntawm fluorine-muaj cov ntaub ntawv yuav tsum tau encapsulate nyias zaj duab xis hnub ci hlwb yog li 9 lub sij hawm muaj zog dua li ntawm crystalline silicon hlwb.

(2) Photoinduced attenuation.

Lub attenuation ntawm nyias zaj duab xis hnub ci yog li 30%.

(3) Kev hloov dua siab tshiab ntawm nyias zaj duab xis solar cells yog tsawg.

Vim muaj kev hloov pauv siab ua haujlwm ntawm cov cell hnub ci, feem ntau ntawm lawv tsuas yog tshwm sim hauv cov khoom siv hluav taws xob me me thiab hloov tau yooj yim.

(4) Cadmium telluride nyob rau hauv cov khoom siv yog cov tshuaj lom.

Cadmium yog ib qho tshuaj lom neeg heev uas khaws cia rau hauv cov khoom noj xws li mercury, uas tsis yog lub tswv yim ntawm kev ua phooj ywg ib puag ncig, nyab xeeb thiab tsis muaj tshuaj lom. Ntau lub tsev kawm ntawv thiab cov chaw soj nstuam tab tom nrhiav rau ib puag ncig tus phooj ywg, kev ua haujlwm siab, thiab cov tuam txhab hnub ci tab tom tshawb nrhiav txoj hauv kev kom rov zoo thiab rov ua dua cov ntaub ntawv uas muaj cadmium los daws cov teeb meem ib puag ncig.