TY - JOUR
T1 - Operating Temperature of Nonfullerene Acceptor-Based Bulk Heterojunction Organic Solar Cells
AU - Ram, Kiran Sreedhar
AU - Setsoafia, Daniel Dodzi Yao
AU - Mehdizadeh-Rad, Hooman
AU - Ompong, David
AU - Elumalai, Naveen Kumar
AU - Singh, Jai
N1 - Publisher Copyright:
© 2021 Wiley-VCH GmbH
Copyright:
Copyright 2021 Elsevier B.V., All rights reserved.
PY - 2021/10
Y1 - 2021/10
N2 - A comprehensive study of the operating temperature ((Formula presented.)) of three nonfullerene (NF) acceptor-based bulk heterojunction organic solar cells (BHJ OSCs), two conventional (OSC1 and OSC3) and one inverted (OSC2) structure, is presented. A quantitative analysis of the thermal power generated by photon absorption in transport layers and electrodes, thermalization of photoexcited charge carriers, tail-state recombination, and resistive heating is conducted. For all three OSCs, the dependence of operating temperature (Formula presented.) on the voltage is simulated and it is found that OSC1 and OSC2 operate at about 320 K and OSC3 at 319 K. It is also found that the thermal power generated due to thermalization (PT) and absorption in other than the active layer ((Formula presented.)) in OSC3 are smaller than those in both OSC1 and OSC2 but the thermal power generated due to the resistive heating (PR) is larger in OSC3 than in OSC1 and OSC2, leading to the net power absorbed in the active layer of OSC3 being higher than that in OSC1 and OSC2. Thus, although the operating temperature of all three cells remains in the range from 320 to 321 K, OSC3 shows a better photovoltaic performance.
AB - A comprehensive study of the operating temperature ((Formula presented.)) of three nonfullerene (NF) acceptor-based bulk heterojunction organic solar cells (BHJ OSCs), two conventional (OSC1 and OSC3) and one inverted (OSC2) structure, is presented. A quantitative analysis of the thermal power generated by photon absorption in transport layers and electrodes, thermalization of photoexcited charge carriers, tail-state recombination, and resistive heating is conducted. For all three OSCs, the dependence of operating temperature (Formula presented.) on the voltage is simulated and it is found that OSC1 and OSC2 operate at about 320 K and OSC3 at 319 K. It is also found that the thermal power generated due to thermalization (PT) and absorption in other than the active layer ((Formula presented.)) in OSC3 are smaller than those in both OSC1 and OSC2 but the thermal power generated due to the resistive heating (PR) is larger in OSC3 than in OSC1 and OSC2, leading to the net power absorbed in the active layer of OSC3 being higher than that in OSC1 and OSC2. Thus, although the operating temperature of all three cells remains in the range from 320 to 321 K, OSC3 shows a better photovoltaic performance.
KW - nonfullerene acceptors
KW - operating temperature
KW - organic solar cells
KW - tail-state recombination
KW - thermalization
UR - http://www.scopus.com/inward/record.url?scp=85111510947&partnerID=8YFLogxK
U2 - 10.1002/pssa.202100255
DO - 10.1002/pssa.202100255
M3 - Article
AN - SCOPUS:85111510947
SN - 1862-6300
VL - 218
SP - 1
EP - 11
JO - Physica Status Solidi (A) Applications and Materials Science
JF - Physica Status Solidi (A) Applications and Materials Science
IS - 19
M1 - 2100255
ER -
