Browsing by Author "Hiwet, Gebre"

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    Theoretical and Experimental Study of the Photovoltaic Effect In Thin Films
    (Addis Ababa, 1985-06) Hiwet, Gebre; uAhka, P. Hr (PhD)
    In the pres ent 8tud~ tho th eory o f ph ot ovo ltaic , n, rgy conv ersi on is pres ented. 8 ~ 8ic f actors affecting oonversion capability of phot ovolt ai c devic es aro di8CU 8 8 ~d . Goner l f ormula of the minority carri er distribution and current density across p-n junctions are r e vis ed and fu rther deu,loped t o arrive ~t the over all c ollection effi ienoy expre ssion which is valid f or any thin f ilm phot ovo ltaic c e lls. POCU8S is put on the main s o lar cell p ~ r a m 6 t e r 8 like conversion e fficienc y and spectral response . To thB end some exper imental works on a sing!, orystal solar cell (FD-K) a r ~ made. EMphasis is put on establishing circuits capable of measuring various Bolar cell parameters r anging f r om Si - eingLe ~YDt a L c~LL o f tow efficiGncy. The resuLts of tho measur ement ar e prasanted in tho fo rm of tabL es and graphs . Conclusions ara also ~a d e on thG results obtained.