From 20.9 to 22.3% Cu (In, Ga)(S, Se) 2 solar cell: Reduced recombination rate at the heterojunction and the depletion region due to K-treatment

KF Tai, R Kamada, T Yagioka, T Kato… - Japanese Journal of …, 2017 - iopscience.iop.org
Abstract Certified efficiency of 22.3% has been achieved for Cu (In, Ga)(Se, S) 2 solar cell.
Compared to our previous record cell with 20.9% efficiency, the major breakthrough is due …

Unassisted Water Splitting Exceeding 9% Solar-to-Hydrogen Conversion Efficiency by Cu(In, Ga)(S, Se)2 Photocathode with Modified Surface Band Structure and …

B Koo, D Kim, P Boonmongkolras, SR Pae… - ACS Applied Energy …, 2020 - ACS Publications
By introducing ZnS between Cu (In, Ga)(S, Se) 2 (CIGS) and the CdS, we greatly improved
the photoelectrochemical (PEC) performance of the CIGS photocathode for hydrogen …

Behavior of Photocarriers in the Light-Induced Metastable State in the p-n Heterojunction of a Cu(In,Ga)Se2 Solar Cell with CBD-ZnS Buffer Layer

WJ Lee, HJ Yu, JH Wi, DH Cho, WS Han… - … applied materials & …, 2016 - ACS Publications
We fabricated Cu (In, Ga) Se2 (CIGS) solar cells with a chemical bath deposition (CBD)-ZnS
buffer layer grown with varying ammonia concentrations in aqueous solution. The solar cell …

Photovoltaic Performance and Interface Behaviors of Cu(In,Ga)Se2 Solar Cells with a Sputtered-Zn(O,S) Buffer Layer by High-Temperature Annealing

JH Wi, TG Kim, JW Kim, WJ Lee, DH Cho… - … applied materials & …, 2015 - ACS Publications
We selected a sputtered-Zn (O, S) film as a buffer material and fabricated a Cu (In, Ga) Se2
(CIGS) solar cell for use in monolithic tandem solar cells. A thermally stable buffer layer was …

Ultrafast wavelength-dependent carrier dynamics related to metastable defects in Cu (In, Ga) Se2 solar cells with chemically deposited Zn (O, S) buffer layer

WJ Lee, DH Cho, JM Bae, ME Kim, J Park, YD Chung - Nano Energy, 2020 - Elsevier
Abstract The Cu (In, Ga) Se 2 (CIGS) solar cells were fabricated with a Zn (O, S) buffer layer
via chemical bath deposition method (CBD) using different thiourea (TU) mole …

Understanding the light soaking effect of ZnMgO buffer in CIGS solar cells

S Kim, CS Lee, S Kim, RBV Chalapathy… - Physical Chemistry …, 2015 - pubs.rsc.org
This study investigated the mechanism underlying the light soaking effect of a ZnMgO buffer
in Cu (In, Ga) Se2 (CIGS) solar cells, where the cell efficiency increased with an increase of …

Effects of Ammonia‐Induced Surface Modification of Cu(In,Ga)Se2 on High‐Efficiency Zn(O,S)‐Based Cu(In,Ga)Se2 Solar Cells

J Li, Y Ma, G Chen, J Gong, X Wang, Y Kong, X Ma… - Solar Rrl, 2019 - Wiley Online Library
Post‐treatment of Cu (In, Ga) Se2 (CIGS) surfaces, as an efficient way to improve the
performance of CIGS solar cells, has received increasing attention in recent years. To …

Evolution of Morphological and Chemical Properties at p–n Junction of Cu(In,Ga)Se2 Solar Cells with Zn(O,S) Buffer Layer as a Function of KF Postdeposition …

WJ Lee, DH Cho, JH Wi, JH Yu, WJ Kim… - … applied materials & …, 2021 - ACS Publications
We carried out KF postdeposition treatment (PDT) on a Cu (In, Ga) Se2 (CIGS) layer with a
process time varying from 50 to 200 s. The highest CIGS solar-cell efficiency was achieved …

Influence of the Al-Doped ZnO Sputter-Deposition Temperature on Cu(In,Ga)Se2 Solar Cell Performance

H Park, S Alhammadi, VR Minnam Reddy, C Park… - Nanomaterials, 2022 - mdpi.com
Heterojunction Cu (In, Ga) Se2 (CIGS) solar cells comprise a substrate/Mo/CIGS/CdS/i-
ZnO/ZnO: Al. Here, Al-doped zinc oxide (AZO) films were deposited by magnetron …

Performance improvement in Cd-free Cu (In, Ga) Se 2 solar cells by modifying the electronic structure of the ZnMgO buffer layer

CS Lee, S Kim, YM Shin, BG Park, BT Ahn, HS Kwon - Rsc Advances, 2014 - pubs.rsc.org
ZnMgO thin film is a potential buffer layer in Cu (In, Ga) Se2 (CIGS) solar cells. ZnMgO film
can be uniformly deposited, and the composition of Mg can be precisely controlled by the …