Physical principles of the photovoltaic energy conversion: Temperature dependences of PV cell parameters

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41310%2F18%3A77558" target="_blank" >RIV/60460709:41310/18:77558 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.4018/978-1-5225-3867-7.ch014" target="_blank" >http://dx.doi.org/10.4018/978-1-5225-3867-7.ch014</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.4018/978-1-5225-3867-7.ch014" target="_blank" >10.4018/978-1-5225-3867-7.ch014</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Physical principles of the photovoltaic energy conversion: Temperature dependences of PV cell parameters

Popis výsledku v původním jazyce

This chapter describes how the I-V characteristic of illuminated PV cells varies with temperature changes. The effect is explained according to the solid states theory. The higher temperature, the lower open-circuit voltage and the higher short-circuit current. This behavior is explained on the basis of band theory in solid-state physics. The increasing temperature causes a narrowing of the forbidden gap and a shift of the Fermi energy level toward the center of the forbidden gap. Both of these effects lead to a reduction of the potential barrier in the band diagram of the illuminated PN junction, thus to decrease of the photovoltaic voltage. In addition, the narrowing of the forbidden gap causes higher generation of electron-hole pairs in the illuminated PN junction and short-circuit current increases. The efficiency of the PV energy conversion decreases with the increasing temperature.

Název v anglickém jazyce

Physical principles of the photovoltaic energy conversion: Temperature dependences of PV cell parameters

Popis výsledku anglicky

This chapter describes how the I-V characteristic of illuminated PV cells varies with temperature changes. The effect is explained according to the solid states theory. The higher temperature, the lower open-circuit voltage and the higher short-circuit current. This behavior is explained on the basis of band theory in solid-state physics. The increasing temperature causes a narrowing of the forbidden gap and a shift of the Fermi energy level toward the center of the forbidden gap. Both of these effects lead to a reduction of the potential barrier in the band diagram of the illuminated PN junction, thus to decrease of the photovoltaic voltage. In addition, the narrowing of the forbidden gap causes higher generation of electron-hole pairs in the illuminated PN junction and short-circuit current increases. The efficiency of the PV energy conversion decreases with the increasing temperature.

Druh

C - Kapitola v odborné knize

CEP obor

—

OECD FORD obor

20704 - Energy and fuels

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2018

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název knihy nebo sborníku

Handbook of Research on Renewable Energy and Electric Resources for Sustainable Rural Development

ISBN

978-152253867-7

Počet stran výsledku

25

Strana od-do

327-351

Počet stran knihy

672

Název nakladatele

IGI Global

Místo vydání

Hershey PA, USA 17033

Kód UT WoS kapitoly

—