To Bias or Not to Bias? An “How-To” Guide for Spectral Response Measurements of Thin Film Multi-Junction Photovoltaic Modules

2012 ◽  
Vol 1426 ◽  
pp. 81-86 ◽  
Author(s):  
Mauro Pravettoni

ABSTRACTCurrent-matching between junctions in a multi-junction photovoltaic device is fundamental for its performance prediction: the measurement of the spectral response of each junction provides a valuable information to optimize the device performance. Various aspects make spectral response measurements of such devices particularly challenging. In this work these aspects are analysed theoretically and guidelines to avoid their impact in the experimental practice are given.

2011 ◽  
Vol 20 (4) ◽  
pp. 416-422 ◽  
Author(s):  
Mauro Pravettoni ◽  
Anika Komlan ◽  
Roberto Galleano ◽  
Harald Müllejans ◽  
Ewan D. Dunlop

2015 ◽  
Vol 3 (20) ◽  
pp. 10949-10958 ◽  
Author(s):  
K. X. Steirer ◽  
R. E. Richards ◽  
A. K. Sigdel ◽  
A. Garcia ◽  
P. F. Ndione ◽  
...  

Decomposition/oxidation correlated to nanoscale c-AFM helps separate selectivity and conductivity.


2020 ◽  
pp. 110668
Author(s):  
Mohan Reddy Pallavolu ◽  
Ramesh Reddy Nallapureddy ◽  
Sang W. Joo ◽  
Chinho Park

2011 ◽  
Vol 1321 ◽  
Author(s):  
Mauro Pravettoni ◽  
Alessandro Virtuani

ABSTRACTHydrogenated amorphous silicon (a-Si:H) multi-junction devices have demonstrated a way to increase the efficiency of a-Si:H thin-film photovoltaic (PV) modules, which is now well above 10%. Since the current–matching behaviour of all sub-cells is a critical aspect, the measurement of the spectral response (SR) of all junctions provides valuable information to optimize the device performance under a given spectral distribution. In this work the authors investigate the impact of low shunt resistances on the SR of a double-junction a-Si:H/μc-Si PV module. The origin of a low shunt resistance in a-Si:H multi-junction devices is revised. A simple theoretical approach is then used to describe the anomalous dark SR observed experimentally as a consequence of the presence of low shunt resistances. The dark SR allows therefore to detect the presence of shunts and discriminate the defective sub-cell.


2018 ◽  
Vol 42 (14) ◽  
pp. 11642-11652 ◽  
Author(s):  
P. Prabukanthan ◽  
R. Lakshmi ◽  
G. Harichandran ◽  
Tetiana Tatarchuk

A successful single step ECD of pure CuInSe2 and Mn2+ doped CuInSe2 thin films was carried out. 5 mole% Mn doped CuInSe2 thin film-based solar cells exhibit better PCE.


2011 ◽  
Vol 1321 ◽  
Author(s):  
Georgios Tzamalis ◽  
Harald Müllejans

ABSTRACTWe present a procedure for calibrating tandem thin film photovoltaic modules under natural sunlight. The distinct steps involve pre-conditioning via light soaking, spectral response measurements and I-V measurements under natural sunlight. The measurements were done using a crystalline silicon reference cell as well as two filtered reference cells designed to spectrally match the top and bottom junctions in the tandem module.


2021 ◽  
Vol 221 ◽  
pp. 110907
Author(s):  
Mohammed A. Razooqi Alaani ◽  
Prakash Koirala ◽  
Puja Pradhan ◽  
Adam B. Phillips ◽  
Nikolas J. Podraza ◽  
...  

2019 ◽  
Vol 7 (45) ◽  
pp. 25808-25817
Author(s):  
Rong Wang ◽  
Boxin Wang ◽  
Jianqiu Wang ◽  
Xuning Zhang ◽  
Dongyang Zhang ◽  
...  

Applying anion-induced electron transfer doping with a series of TXABr salts to non-fullerene organic solar cells enables to tune the doping efficiency and photovoltaic device performance.


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