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Efficiency boost of inverted polymer solar cells using electrodeposited n-type Cu2O electrons selective transport layers (ESTLs)

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dc.contributor.author Wanninayake, WTMAPK
dc.contributor.author Namawardana, DGKK
dc.contributor.author Wanigasekara, RMG
dc.contributor.author Jayathilaka, KMDC
dc.contributor.author Wijesundera, RP
dc.contributor.author Siripala, W
dc.contributor.author Malik, MI
dc.date.accessioned 2024-04-09T10:30:51Z
dc.date.available 2024-04-09T10:30:51Z
dc.date.issued 2023
dc.identifier.citation Wanninayake, WTMAPK; Namawardana, DGKK; Wanigasekara, RMG; Jayathilaka, KMDC; Wijesundera, RP; Siripala, W; Malik, MI; 2023, Efficiency boost of inverted polymer solar cells using electrodeposited n-type Cu2O electrons selective transport layers (ESTLs), Journal of the National Science Foundation of Sri Lanka, National Science Foundation of Sri Lanka en_US
dc.identifier.uri http://repository.kln.ac.lk/handle/123456789/27880
dc.description.abstract Polymer solar cells (PSCs) have attracted tremendous interest as suitable candidates for harnessing solarenergy in the recent years. The inherent optoelectronic properties of the inorganic transition metal oxide, negative type cuprous oxide (n-Cu2O), makes it an attractive candidate to improve the performance of PSCs when incorporated as the electron selective transport layers (ESTLs) in the device. In this study, inverted PSCs were fabricated on stainless steel (SS) substrates with n-Cu2O as the ESTL. The n-Cu2O films were prepared by electrodeposition method, followed by annealing under ambient conditions. The active layer material was prepared as bulk heterojunction blend using regioregular poly(3-hexylthiophene) (P3HT) and phenyl-C61-butyric acid methyl ester (PCBM). Poly-(4,3-ethylene dioxythiophene):poly(styrenesulphonate) (PEDOT:PSS) was used as the hole transport layer (HTL) and the final device structure was SS/n-Cu2O/P3HT:PCBM/PEDOT:PSS/Au. Annealing of the n-Cu2O ESTL in air was optimized observing the photoactive performance of the device. Optoelectronic performance of the devices was characterized using spectral response and dark and light current-voltage (I-V) measurements. n-Cu2O ESTL- incorporated devices have absorbed more photons in the short wavelength region of 450‒600 nm with the annealing of n-Cu2O ESTL due to the reduction of electron-hole recombination. The performance of the devices was significantly increased after incorporating pre-annealed n-Cu2O ESTL at 175 °C for 30 min in air. The maximum power conversion efficiency (PCE) was 0.35%. en_US
dc.publisher National Science Foundation of Sri Lanka en_US
dc.subject ESTL, inverted PSCs, n-Cu2O, P3HT-PCBM, polymer solar cells. en_US
dc.title Efficiency boost of inverted polymer solar cells using electrodeposited n-type Cu2O electrons selective transport layers (ESTLs) en_US


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