Influence of surface properties on the performance of Cu(In,Ga)(Se,S)2thin-film solar cells using Kelvin probe force microscopy

RSC Advances ◽  
2015 ◽  
Vol 5 (51) ◽  
pp. 40719-40725 ◽  
Author(s):  
JungYup Yang ◽  
Dongho Lee ◽  
KwangSoo Huh ◽  
SeungJae Jung ◽  
JiWon Lee ◽  
...  
Keyword(s):  
Solar Cells ◽  
Band Gap ◽  
Surface Properties ◽  
Open Circuit Voltage ◽  
Open Circuit ◽  
Absorber Layer ◽  
Kelvin Probe Force Microscopy ◽  
Kelvin Probe ◽  
Force Microscopy ◽  
Graded Band Gap

We have investigated the sulfurization process in a Cu(In,Ga)(Se,S)2absorber layer fabricated by a two-step sputter and selenization/sulfurization method in order to make an ideal double-graded band-gap profile and increase the open circuit voltage.

Interface Investigation of ZnO/CdS/CuIn1−xGaxSe2/Mo Solar Cells

2001 ◽  
Vol 668 ◽  
Author(s):  
F.S. Hasoon ◽  
H.A. Al-Thani ◽  
K.M. Jones ◽  
Y. Yan ◽  
H. R. Moutinho ◽  
...  
Keyword(s):  
Solar Cells ◽  
Band Gap ◽  
Current Density ◽  
Open Circuit Voltage ◽  
Open Circuit ◽  
Surface Microstructure ◽  
Device Performance ◽  
Microstructural Properties ◽  
Cigs Solar Cells ◽  
Graded Band Gap

ABSTRACTGraded-band-gap CuIn1−xGaxSe2 (CIGS) absorbers with Ga/Ga+In value in the 20%-30% range have a demonstrated efficiency of 18.8%. For CdS-containing devices, the shortcircuit current density (Jsc) has almost reached its expected maximum. However, the open-circuit voltage of CIGS solar cells is limited by the surface microstructure and chemistry. In this work, we examine the microstructural properties and chemistry of CIGS. We also attempted to correlate the above observations and device performance.

Visible Light Photodiodes and Photovoltages from Detonation Nanodiamonds

MRS Advances ◽  
2016 ◽  
Vol 1 (14) ◽  
pp. 971-975
Author(s):  
Bohuslav Rezek ◽  
Stepan Stehlik ◽  
Alexander Kromka ◽  
Jean-Charles Arnault ◽  
Martin Weis ◽  
...  
Keyword(s):  
Open Circuit Voltage ◽  
Green Laser ◽  
Open Circuit ◽  
Detonation Nanodiamonds ◽  
Kelvin Probe ◽  
Force Microscopy ◽  
Current Voltage ◽  
Current Voltage Characteristics ◽  
Energy Conversion Devices ◽  
532 Nm

ABSTRACTMacroscopic and microscopic photovoltage characteristics of detonation nanodiamonds (DNDs) with distinct surface terminations are presented. Organic photodiodes are fabricated based on P3HT+DNDs mixture (50 wt%). We compare effect of hydrogen and oxygen termination of DNDs. Compared to photodiodes without DNDs the current-voltage characteristics of photodiodes with O-DNDs in dark and under AM 1.5 illumination show reduced dark current, and higher photocurrent and open circuit voltage. H-DNDs shunt the photodiodes, which is attributed to their surface conductivity. Kelvin probe force microscopy detects a reproducible photovoltage of around 5 mV generated by a green laser (532 nm) on both types of pristine DNDs. Thus although conductivity of H-DNDs may represent a problem for photodiodes, both types of DNDs alone can function as miniature energy conversion devices.

scholarly journals Record 1.0 V open-circuit voltage in wide band gap chalcopyrite solar cells

2017 ◽  
Vol 25 (9) ◽  
pp. 755-763 ◽  
Author(s):  
Fredrik Larsson ◽  
Nina Shariati Nilsson ◽  
Jan Keller ◽  
Christopher Frisk ◽  
Volodymyr Kosyak ◽  
...  
Keyword(s):  
Solar Cells ◽  
Band Gap ◽  
Open Circuit Voltage ◽  
Wide Band ◽  
Open Circuit ◽  
Wide Band Gap

Tailoring the Open-Circuit Voltage Deficit of Wide-Band-Gap Perovskite Solar Cells Using Alkyl Chain-Substituted Fullerene Derivatives

2018 ◽  
Vol 10 (26) ◽  
pp. 22074-22082 ◽  
Author(s):  
Dhruba B. Khadka ◽  
Yasuhiro Shirai ◽  
Masatoshi Yanagida ◽  
Takeshi Noda ◽  
Kenjiro Miyano
Keyword(s):  
Solar Cells ◽  
Band Gap ◽  
Open Circuit Voltage ◽  
Alkyl Chain ◽  
Perovskite Solar Cells ◽  
Wide Band ◽  
Open Circuit ◽  
Wide Band Gap ◽  
Fullerene Derivatives
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