presentaons* - oregon state universitysites.science.oregonstate.edu/~tatej/courses/ph403/... ·...

Presenta(ons  

1  

Organiza(on  

•  End  on  (me  •  Right  amount  of  material  •  Have  a  (me  budget  for  each  slide  •  Work  towards  a  take-­‐home  message  •  UncluAered  slides  that  enhance  your  words  •  Rehearse  your  talk  at  least  3  /mes  •  Did  I  men(on  ending  on  (me?  

2  

Content  

•  Work  towards  a  take-­‐home  message  •  Focus  on  results,  with  short  mo(va(on  •  Make  it  clear  and  simple  •  Lots  of  graphical  informa(on,  clearly  presented  •  Keep  text  short,  and  don’t  read  from  your  slide  •  No  long-­‐winded  introduc(ons  –  short  (<1min)  outline  

•  Punchy  summary  

3  

During  the  talk  

•  Face  the  audience,  not  the  slides  •  Your  slides  should  support  you,  not  dominate  you  •  Describe  your  slides;  it  takes  (me  for  the  audience  to  process  graphical  informa(on  and  understand  its  significance  

•  Don’t  read  text  –  audience  can  read  much  more  quickly  than  you  can  

•  Make  eye  contact;  have  good  body  language  •  Watch  where  you  stand  

4  

Bits  and  pieces  

•  Title  slide:    your  name  &  affilia(on  your  advisor’s  name  &  affilia(on  any  funding  informa(on      the  date!  

•  Acknowledgements  to  colleagues  come  at  the  end  and  need  not  be  read  out.  

•  Summary  slide  can  be  led  up  at  the  end  for  people  to  read  if  (me  runs  out.  

5  

Good  habits  

•  UncluAered  slides  •  Clear  message  •  Use  a  long  pointer  or  a  laser  pointer  •  Listen  carefully  to  ques(ons  •  Be  able  to  nego(ate  to  a  given  slide  in  ONE  keystroke  (number  your  slides)  

•  Wear  nice  clothes  –  shows  respect  for  your  audience  

6  

Bad  habits  

•  Holding  on  to  a  coffee  cup  all  the  way  through  your  talk  

•  Using  your  hand  to  point  something  out  on  a  slide  •  Geing  in  the  way  of  the  image  -­‐  shoulders  par(cularly  are  a  problem  here!    

•  Finishing  peoples’  ques(ons  for  them.  •  Flipping  back  through  slides,  desperately  searching  for  one  that  you  could  equally  well  refer  to  with  a  well  chosen  phrase    

7  

What  not  to  say  

•  I'll  come  back  to  this  if  I  have  (me.    (You  won't.)    

•  I  won't  show  you  this  slide.  •  You  can't  really  see  it  from  this  slide,  but  ........  

8  

What  to  do  •  Prac(ce  your  talk  beforehand;  at  least  3  (mes.    (It  always  takes  twice  as  long  in  the  shower,  because  you  go  back  and  correct  yourself).    

•  Look  at  your  slides  beforehand  from  the  back  of  the  room.    

•  Stand  well  away  from  the  overhead  projector  when  you  talk,  and  face  the  audience,  not  the  screen.    Make  eye  contact  with  many  people.  

•  Know  your  audience.    •  Relax,  smile,  you're  doing  fine!    

9  

Cri(que  the  next  slide  

•  Informa(on  density?  •  Graphics  readability?  •  Color?  •  Axes  labels  &  font  size?  

10  

BaCuTeF films

Polycrystalline on SiO2 Oriented on MgO

PLD-deposited; single phase; low temperature

10 20 30 40 50 60 702 θ (degrees)

(001)

(002)

(003)

(004)

(005)

(006)

BaCuTeF film

10 20 30 40 502θ (degrees)

powder

400˚C

500˚C

600˚C

11  

Cri(que  the  next  2  slides  

•  Informa(on  density?  •  Understandable?  •  Color?  

12  

Schema(c  of  a  generic  TCO  Tr

ansm

ittan

ce (%

)  

Wavelength (µm)  0  

100  

0  

Absorption loss  

Reflectance plus absorption loss  

lg   lp

High visible-light transmittance window  

Fundamental band-edge (~0.35 µm)  

Plasma reflection edge (~1-1.5 µm)  

Visible wavelengths  

13  

Thin-­‐film    solar  cells  

Substrate  n-­‐SnO2  n-­‐CdS  p-­‐CdTe  

p-­‐ZnTe  contact  

Light  

CdTe  solar  cell  

Light  

CIGS  solar  cell  

n-­‐ZnO  n-­‐CdS  p-­‐CIGS  

Mo  contact  Substrate  

In  both  cases,  the  light  first  passes  through  the  TCO.  

14  

Cri(que  the  next  2  slides  

•  Informa(on  density?  •  Equa(on  complexity?  •  Color?  

15  

The  op(cal  constants  (i)  •    Subs(tu(ng  for  the  conduc(vity  in  the  expression  for  the          complex  permiivity  gives,  

ε * ω( ) = ε∞ + iε0ω$

% &

'

( ) ωne2m

$

% &

'

( ) −i ω0

2 −ω2$ %

' ( +ω τ

ω02 −ω 2$

% ' (

2+ ω τ( )2

,

- . .

/

.

.

0

1 . .

2

.

.

∴ε * ω( ) = ε∞ + ne2ε0m%

& '

(

) *

ω02 −ω2%

& ( ) + i ω τ( )

ω02 −ω2%

& ( )

2+ ω τ( )2

-

. / /

0

/ /

1

2 / /

3

/ /

∴Re(ε*) = ε1 = ε∞ + ne2

ε0m$

% &

'

( )

ω02 −ω2$

% ' (

ω02 −ω2$

% ' (

2+ ω τ( )2

-

. / /

0

/ /

1

2 / /

3

/ /

and,

Im ε *( ) = ε2 = ne2ε0m"

# $

%

& '

ω τ( )ω0

2 −ω2" #

% &

2+ ω τ( )2

+

, - -

.

- -

/

0 - -

1

- -

16  

Solution to Boltzmann’s equation: Seebeck effect, a

•  Parabolic band •  High degeneracy •  Ellipsoidal constant energy surfaces

α = 2

3k 2Tq2

π3n( )

23 md

* s2+ 3

2{ }

•     a (n,  m*,  s) •  Knowledge of s would give us m* •  Need a transport phenomenon that is sensitive to s.

Scattering parameter

RHall =

1qn

17  

Slides  -­‐  summary  

•  Get  the  basics  right  Font  sizes  large  Graphical  informa(on  clear  and  crisp  Colors  with  good  contrast  

• Minimal  text  • Make  sure  videos  &  anima(ons  work  •  No  distrac(ng  fly  ins    

18  

Font  sizes  

48  point  40  point  

32  point  

18  point  

11  point  

19  

Font  colors  

Red  on  black  

Yellow  on  white  

Blue  on  green  

White  on  blue  

20  

Font  colors  

Magenta  on  cyan  

Yellow  on  green  

Red  on  green  

Black  on  orange  

21  

Logis(cs  

22  

•  All  talks  to  be  loaded  on  Weniger  304  computer  on  Tuesday  9-­‐10  am  

•  Laser  pointer  will  available  •  All  should  aAend  unless  an  exam  conflict