<prompt> Hlalosa mokhoa o akaretsang oa lisele tsa letsatsi.nan  <response>: Instruction in English: Explain the general mechanism behind solar cells. . Response in English: Solar cells, also known as photovoltaic cells, work by converting sunlight into electricity through the photovoltaic effect. This effect occurs when photons of light that hit the cells surface are absorbed by the cells semiconductor material, typically silicon. This causes electrons from the semiconductor material to be knocked loose, and these free electrons start to move around in the material. The movement of the free electrons creates an electrical current, which is collected by metal contacts on the top and bottom of the cell. By connecting the cells to an external circuit, the electrons travel through the circuit, providing electricity to the device or system.To increase the efficiency of the cells, they are often designed with multiple layers of different semiconductor materials, each optimized to absorb a different part of the solar spectrum. These cells are then connected together in a series to form a solar panel, which is capable of producing a larger amount of electricity.Ultimately, the mechanism behind solar cells is that they use the energy from the sun to excite electrons in the semiconductor material, which then flow through an external circuit, providing electricity. . Response in Sesotho: Lisele tsa letsatsi, tse tsejoang hape e le lisele tsa photovoltaic, li sebetsa ka ho fetola khanya ea letsatsi hore e be motlakase ka phello ea photovoltaic. Phello ena e etsahala ha li-photon tsa leseli tse otlang bokaholimo ba sele li nkuoa ke semiconductor ea sele, eo hangata e leng silicon. Sena se etsa hore lielektrone tse tsoang thepa ea semiconductor li theohe, me li-electrone tsena tse sa lefelloeng li qala ho pota-pota ka hara thepa. Ho tsamaea ha li-electrone tse sa lefelloeng ho etsa hore ho be le motlakase oa motlakase, o bokelloang ke likhokahano tsa tšepe ka holimo le ka tlaase ho sele. Ka ho hokahanya lisele ho potoloho e ka ntle, li-electrone li tsamaea ka potoloho, li fana ka motlakase ho sesebelisoa kapa tsamaiso. Ho eketsa bokhoni ba lisele, hangata li entsoe ka likarolo tse ngata tsa lisebelisoa tse fapaneng tsa semiconductor, e ngoe le e ngoe e ntlafalitsoe ho monya karolo e fapaneng ea mahlaseli a letsatsi. Joale lisele tsena li kopanngoa hammoho ka letoto ho etsa setsi sa solar, se khonang ho hlahisa tekanyo e khōloanyane ea motlakase. Qetellong, mochine o ka morao ho lisele tsa letsatsi ke hore li sebelisa matla a tsoang letsatsing ho hlasimolla lielektrone ka thepa ea semiconductor, e ntano phalla ka potoloho e ka ntle, e fana ka motlakase. 