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11.2% Efficient Solution Processed Kesterite Solar Cell with a Low Voltage Deficit
Author(s) -
Haass Stefan G.,
Diethelm Matthias,
Werner Melanie,
Bissig Benjamin,
Romanyuk Yaroslav E.,
Tiwari Ayodhya N.
Publication year - 2015
Publication title -
advanced energy materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.08
H-Index - 220
eISSN - 1614-6840
pISSN - 1614-6832
DOI - 10.1002/aenm.201500712
Subject(s) - kesterite , materials science , low voltage , solar cell , voltage , optoelectronics , czts , electrical engineering , engineering
An 11.2% efficient kesterite solar cell is fabricated with a open circuit voltage ( V oc ) deficit of only 0.57 V, which is possible by employing the three‐stage annealing process. The reduced V oc deficit goes along with an increased minority carrier lifetime, low diode saturation current, and ideality factor, which are signatures of the semiconductor material with a low concentration of recombination centers.