TY  - JOUR
AU  - Yao, Zhirong
AU  - Duan, Weiyuan
AU  - Steuter, Paul
AU  - Hüpkes, Jürgen
AU  - Lambertz, Andreas
AU  - Bittkau, Karsten
AU  - Pomaska, Manuel
AU  - Qiu, Depeng
AU  - Qiu, Kaifu
AU  - Wu, Zhuopeng
AU  - Shen, Hui
AU  - Rau, Uwe
AU  - Ding, Kaining
TI  - Influence of Oxygen on Sputtered Titanium‐Doped Indium Oxide Thin Films and Their Application in Silicon Heterojunction Solar Cells
JO  - Solar RRL
VL  - 5
IS  - 1
SN  - 2367-198X
CY  - Weinheim
PB  - Wiley-VCH
M1  - FZJ-2021-00872
SP  - 2000501 -
PY  - 2021
AB  - One of the challenges in fabricating high‐performance n‐type silicon heterojunction (SHJ) solar cells is developing a high‐quality transparent conductive oxide (TCO) electrode. Herein, the development and application of low‐temperature sputtered titanium‐doped indium oxide (ITiO) in n‐type, rear junction SHJ solar cells as a function of the oxygen flow ratio is presented. The microstructure, morphology, and optoelectronic properties are analyzed. The grain size of ITiO thin films decreases rapidly as the oxygen flow ratio is increased. Compared with an indium tin oxide (ITO) thin film, ITiO shows a superior balance in achieving excellent optoelectronic properties by reducing film resistivity but maintaining weak absorption. Higher fill factor is obtained by substituting ITiO for ITO as the front electrode in SHJ solar cells, which is mainly due to the improved carrier transport. Resistivity contributions of front‐side vertical and lateral carrier transport are disclosed by Quokka3 simulation. A champion cell efficiency of 23.81% with ITiO is achieved, which is so far the highest efficiency among the application of ITiO in SHJ solar cells to the best of our knowledge. The study demonstrates that ITiO is a promising TCO candidate for SHJ solar cells.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000587744700001
DO  - DOI:10.1002/solr.202000501
UR  - https://juser.fz-juelich.de/record/890291
ER  -